ca74dd79e9
This patch makes one change to GOT handling and two changes to N64's relocation model handling. Furthermore, the jumptable encodings have been corrected for static N64. Big GOT handling is now done via a new SDNode MipsGotHi - this node is unconditionally lowered to an lui instruction. The first change to N64's relocation handling is the lifting of the restriction that N64 always uses PIC. Now it is possible to target static environments. The second change adds support for 64 bit symbols and enables them by default. Previously N64 had patterns for sym32 mode only. In this mode all symbols are assumed to have 32 bit addresses. sym32 mode support is selectable with attribute 'sym32'. A follow on patch for clang will add the necessary frontend parameter. This partially resolves PR/23485. Thanks to Brooks Davis for reporting the issue! This version corrects a "Conditional jump or move depends on uninitialised value(s)" error detected by valgrind present in the original commit. Reviewers: dsanders, seanbruno, zoran.jovanovic, vkalintiris Differential Revision: https://reviews.llvm.org/D23652 llvm-svn: 293279
285 lines
9.1 KiB
LLVM
285 lines
9.1 KiB
LLVM
; RUN: llc --march=mips64 -mcpu=mips64r2 < %s | FileCheck %s
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; Generated from the C program:
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;
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; #include <stdio.h>
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; #include <string.h>
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;
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; struct SmallStruct_1b {
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; char x1;
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; };
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;
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; struct SmallStruct_2b {
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; char x1;
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; char x2;
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; };
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;
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; struct SmallStruct_3b {
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; char x1;
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; char x2;
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; char x3;
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; };
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;
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; struct SmallStruct_4b {
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; char x1;
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; char x2;
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; char x3;
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; char x4;
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; };
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;
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; struct SmallStruct_5b {
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; char x1;
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; char x2;
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; char x3;
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; char x4;
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; char x5;
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; };
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;
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; struct SmallStruct_6b {
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; char x1;
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; char x2;
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; char x3;
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; char x4;
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; char x5;
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; char x6;
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; };
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;
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; struct SmallStruct_7b {
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; char x1;
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; char x2;
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; char x3;
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; char x4;
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; char x5;
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; char x6;
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; char x7;
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; };
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;
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; struct SmallStruct_8b {
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; char x1;
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; char x2;
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; char x3;
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; char x4;
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; char x5;
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; char x6;
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; char x7;
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; char x8;
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; };
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;
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; struct SmallStruct_9b {
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; char x1;
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; char x2;
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; char x3;
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; char x4;
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; char x5;
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; char x6;
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; char x7;
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; char x8;
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; char x9;
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; };
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;
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; void varArgF_SmallStruct(char* c, ...);
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;
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; void smallStruct_1b(struct SmallStruct_1b* ss) {
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; varArgF_SmallStruct("", *ss);
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; }
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;
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; void smallStruct_2b(struct SmallStruct_2b* ss) {
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; varArgF_SmallStruct("", *ss);
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; }
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;
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; void smallStruct_3b(struct SmallStruct_3b* ss)
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; {
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; varArgF_SmallStruct("", *ss);
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; }
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;
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; void smallStruct_4b(struct SmallStruct_4b* ss)
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; {
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; varArgF_SmallStruct("", *ss);
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; }
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;
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; void smallStruct_5b(struct SmallStruct_5b* ss)
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; {
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; varArgF_SmallStruct("", *ss);
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; }
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;
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; void smallStruct_6b(struct SmallStruct_6b* ss)
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; {
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; varArgF_SmallStruct("", *ss);
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; }
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;
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; void smallStruct_7b(struct SmallStruct_7b* ss)
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; {
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; varArgF_SmallStruct("", *ss);
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; }
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;
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; void smallStruct_8b(struct SmallStruct_8b* ss)
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; {
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; varArgF_SmallStruct("", *ss);
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; }
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;
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; void smallStruct_9b(struct SmallStruct_9b* ss)
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; {
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; varArgF_SmallStruct("", *ss);
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; }
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%struct.SmallStruct_1b = type { i8 }
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%struct.SmallStruct_2b = type { i8, i8 }
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%struct.SmallStruct_3b = type { i8, i8, i8 }
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%struct.SmallStruct_4b = type { i8, i8, i8, i8 }
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%struct.SmallStruct_5b = type { i8, i8, i8, i8, i8 }
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%struct.SmallStruct_6b = type { i8, i8, i8, i8, i8, i8 }
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%struct.SmallStruct_7b = type { i8, i8, i8, i8, i8, i8, i8 }
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%struct.SmallStruct_8b = type { i8, i8, i8, i8, i8, i8, i8, i8 }
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%struct.SmallStruct_9b = type { i8, i8, i8, i8, i8, i8, i8, i8, i8 }
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@.str = private unnamed_addr constant [3 x i8] c"01\00", align 1
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declare void @varArgF_SmallStruct(i8* %c, ...)
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define void @smallStruct_1b(%struct.SmallStruct_1b* %ss) #0 {
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entry:
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%ss.addr = alloca %struct.SmallStruct_1b*, align 8
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store %struct.SmallStruct_1b* %ss, %struct.SmallStruct_1b** %ss.addr, align 8
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%0 = load %struct.SmallStruct_1b*, %struct.SmallStruct_1b** %ss.addr, align 8
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%1 = bitcast %struct.SmallStruct_1b* %0 to { i8 }*
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%2 = getelementptr { i8 }, { i8 }* %1, i32 0, i32 0
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%3 = load i8, i8* %2, align 1
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call void (i8*, ...) @varArgF_SmallStruct(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i32 0, i32 0), i8 inreg %3)
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ret void
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; CHECK-LABEL: smallStruct_1b:
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; CHECK: dsll $[[R1:[0-9]+]], $[[R2:[0-9]+]], 56
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}
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define void @smallStruct_2b(%struct.SmallStruct_2b* %ss) #0 {
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entry:
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%ss.addr = alloca %struct.SmallStruct_2b*, align 8
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store %struct.SmallStruct_2b* %ss, %struct.SmallStruct_2b** %ss.addr, align 8
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%0 = load %struct.SmallStruct_2b*, %struct.SmallStruct_2b** %ss.addr, align 8
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%1 = bitcast %struct.SmallStruct_2b* %0 to { i16 }*
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%2 = getelementptr { i16 }, { i16 }* %1, i32 0, i32 0
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%3 = load i16, i16* %2, align 1
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call void (i8*, ...) @varArgF_SmallStruct(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i32 0, i32 0), i16 inreg %3)
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ret void
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; CHECK-LABEL: smallStruct_2b:
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; CHECK: dsll $[[R1:[0-9]+]], $[[R2:[0-9]+]], 48
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}
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define void @smallStruct_3b(%struct.SmallStruct_3b* %ss) #0 {
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entry:
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%ss.addr = alloca %struct.SmallStruct_3b*, align 8
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%.coerce = alloca { i24 }
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store %struct.SmallStruct_3b* %ss, %struct.SmallStruct_3b** %ss.addr, align 8
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%0 = load %struct.SmallStruct_3b*, %struct.SmallStruct_3b** %ss.addr, align 8
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%1 = bitcast { i24 }* %.coerce to i8*
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%2 = bitcast %struct.SmallStruct_3b* %0 to i8*
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* %1, i8* %2, i64 3, i32 0, i1 false)
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%3 = getelementptr { i24 }, { i24 }* %.coerce, i32 0, i32 0
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%4 = load i24, i24* %3, align 1
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call void (i8*, ...) @varArgF_SmallStruct(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i32 0, i32 0), i24 inreg %4)
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ret void
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; CHECK-LABEL: smallStruct_3b:
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; CHECK: dsll $[[R1:[0-9]+]], $[[R2:[0-9]+]], 40
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}
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declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture readonly, i64, i32, i1) #1
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define void @smallStruct_4b(%struct.SmallStruct_4b* %ss) #0 {
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entry:
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%ss.addr = alloca %struct.SmallStruct_4b*, align 8
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store %struct.SmallStruct_4b* %ss, %struct.SmallStruct_4b** %ss.addr, align 8
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%0 = load %struct.SmallStruct_4b*, %struct.SmallStruct_4b** %ss.addr, align 8
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%1 = bitcast %struct.SmallStruct_4b* %0 to { i32 }*
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%2 = getelementptr { i32 }, { i32 }* %1, i32 0, i32 0
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%3 = load i32, i32* %2, align 1
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call void (i8*, ...) @varArgF_SmallStruct(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i32 0, i32 0), i32 inreg %3)
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ret void
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; CHECK-LABEL: smallStruct_4b:
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; CHECK: dsll $[[R1:[0-9]+]], $[[R2:[0-9]+]], 32
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}
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define void @smallStruct_5b(%struct.SmallStruct_5b* %ss) #0 {
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entry:
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%ss.addr = alloca %struct.SmallStruct_5b*, align 8
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%.coerce = alloca { i40 }
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store %struct.SmallStruct_5b* %ss, %struct.SmallStruct_5b** %ss.addr, align 8
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%0 = load %struct.SmallStruct_5b*, %struct.SmallStruct_5b** %ss.addr, align 8
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%1 = bitcast { i40 }* %.coerce to i8*
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%2 = bitcast %struct.SmallStruct_5b* %0 to i8*
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* %1, i8* %2, i64 5, i32 0, i1 false)
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%3 = getelementptr { i40 }, { i40 }* %.coerce, i32 0, i32 0
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%4 = load i40, i40* %3, align 1
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call void (i8*, ...) @varArgF_SmallStruct(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i32 0, i32 0), i40 inreg %4)
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ret void
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; CHECK-LABEL: smallStruct_5b:
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; CHECK: dsll $[[R1:[0-9]+]], $[[R2:[0-9]+]], 24
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}
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define void @smallStruct_6b(%struct.SmallStruct_6b* %ss) #0 {
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entry:
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%ss.addr = alloca %struct.SmallStruct_6b*, align 8
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%.coerce = alloca { i48 }
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store %struct.SmallStruct_6b* %ss, %struct.SmallStruct_6b** %ss.addr, align 8
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%0 = load %struct.SmallStruct_6b*, %struct.SmallStruct_6b** %ss.addr, align 8
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%1 = bitcast { i48 }* %.coerce to i8*
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%2 = bitcast %struct.SmallStruct_6b* %0 to i8*
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* %1, i8* %2, i64 6, i32 0, i1 false)
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%3 = getelementptr { i48 }, { i48 }* %.coerce, i32 0, i32 0
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%4 = load i48, i48* %3, align 1
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call void (i8*, ...) @varArgF_SmallStruct(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i32 0, i32 0), i48 inreg %4)
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ret void
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; CHECK-LABEL: smallStruct_6b:
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; CHECK: dsll $[[R1:[0-9]+]], $[[R2:[0-9]+]], 16
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}
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define void @smallStruct_7b(%struct.SmallStruct_7b* %ss) #0 {
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entry:
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%ss.addr = alloca %struct.SmallStruct_7b*, align 8
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%.coerce = alloca { i56 }
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store %struct.SmallStruct_7b* %ss, %struct.SmallStruct_7b** %ss.addr, align 8
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%0 = load %struct.SmallStruct_7b*, %struct.SmallStruct_7b** %ss.addr, align 8
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%1 = bitcast { i56 }* %.coerce to i8*
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%2 = bitcast %struct.SmallStruct_7b* %0 to i8*
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* %1, i8* %2, i64 7, i32 0, i1 false)
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%3 = getelementptr { i56 }, { i56 }* %.coerce, i32 0, i32 0
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%4 = load i56, i56* %3, align 1
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call void (i8*, ...) @varArgF_SmallStruct(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i32 0, i32 0), i56 inreg %4)
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ret void
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; CHECK-LABEL: smallStruct_7b:
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; CHECK: dsll $[[R1:[0-9]+]], $[[R2:[0-9]+]], 8
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}
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define void @smallStruct_8b(%struct.SmallStruct_8b* %ss) #0 {
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entry:
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%ss.addr = alloca %struct.SmallStruct_8b*, align 8
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store %struct.SmallStruct_8b* %ss, %struct.SmallStruct_8b** %ss.addr, align 8
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%0 = load %struct.SmallStruct_8b*, %struct.SmallStruct_8b** %ss.addr, align 8
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%1 = bitcast %struct.SmallStruct_8b* %0 to { i64 }*
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%2 = getelementptr { i64 }, { i64 }* %1, i32 0, i32 0
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%3 = load i64, i64* %2, align 1
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call void (i8*, ...) @varArgF_SmallStruct(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i32 0, i32 0), i64 inreg %3)
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ret void
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; CHECK-LABEL: smallStruct_8b:
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; Check that the structure is not shifted before the pointer to str is loaded.
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; CHECK-NOT: dsll
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; CHECK: lui
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}
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define void @smallStruct_9b(%struct.SmallStruct_9b* %ss) #0 {
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entry:
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%ss.addr = alloca %struct.SmallStruct_9b*, align 8
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%.coerce = alloca { i64, i8 }
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store %struct.SmallStruct_9b* %ss, %struct.SmallStruct_9b** %ss.addr, align 8
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%0 = load %struct.SmallStruct_9b*, %struct.SmallStruct_9b** %ss.addr, align 8
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%1 = bitcast { i64, i8 }* %.coerce to i8*
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%2 = bitcast %struct.SmallStruct_9b* %0 to i8*
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* %1, i8* %2, i64 9, i32 0, i1 false)
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%3 = getelementptr { i64, i8 }, { i64, i8 }* %.coerce, i32 0, i32 0
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%4 = load i64, i64* %3, align 1
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%5 = getelementptr { i64, i8 }, { i64, i8 }* %.coerce, i32 0, i32 1
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%6 = load i8, i8* %5, align 1
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call void (i8*, ...) @varArgF_SmallStruct(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i32 0, i32 0), i64 inreg %4, i8 inreg %6)
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ret void
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; CHECK-LABEL: smallStruct_9b:
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; CHECK: dsll $[[R1:[0-9]+]], $[[R2:[0-9]+]], 56
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}
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