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
209 lines
4.7 KiB
LLVM
209 lines
4.7 KiB
LLVM
; RUN: llc -march=mipsel -mcpu=mips32r6 -relocation-model=static \
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; RUN: -disable-mips-delay-filler < %s | FileCheck %s -check-prefix=STATIC32
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; RUN: llc -march=mipsel -mcpu=mips64r6 -relocation-model=pic -target-abi n64 \
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; RUN: -disable-mips-delay-filler < %s | FileCheck %s -check-prefix=PIC
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; Function Attrs: nounwind
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define void @l() {
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entry:
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; PIC: jalrc $25
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%call = tail call i32 @k()
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; PIC: jalrc $25
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%call1 = tail call i32 @j()
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%cmp = icmp eq i32 %call, %call1
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; CHECK: bnec
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br i1 %cmp, label %if.then, label %if.end
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if.then: ; preds = %entry:
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; STATIC: nop
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; STATIC: jal
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; PIC: jalrc $25
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tail call void @f(i32 signext -2)
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br label %if.end
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if.end: ; preds = %if.then, %entry
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; CHECK: jrc $ra
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ret void
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}
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declare i32 @k()
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declare i32 @j()
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declare void @f(i32 signext)
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; Function Attrs: define void @l2() {
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define void @l2() {
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entry:
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; PIC: jalrc $25
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%call = tail call i32 @k()
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; PIC: jalrc $25
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%call1 = tail call i32 @i()
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%cmp = icmp eq i32 %call, %call1
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; CHECK: beqc
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br i1 %cmp, label %if.end, label %if.then
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if.then: ; preds = %entry:
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; STATIC: nop
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; STATIC: jal
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; PIC: jalrc $25
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tail call void @f(i32 signext -1)
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br label %if.end
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if.end: ; preds = %entry, %if.then
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; CHECK: jrc $ra
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ret void
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}
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declare i32 @i()
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; Function Attrs: nounwind
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define void @l3() {
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entry:
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; PIC: jalrc $25
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%call = tail call i32 @k()
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%cmp = icmp slt i32 %call, 0
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; CHECK: bgez
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br i1 %cmp, label %if.then, label %if.end
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if.then: ; preds = %entry:
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; STATIC: nop
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; STATIC: jal
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; PIC: jalrc $25
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tail call void @f(i32 signext 0)
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br label %if.end
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if.end: ; preds = %if.then, %entry
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; CHECK: jrc $ra
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ret void
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}
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; Function Attrs: nounwind
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define void @l4() {
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entry:
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%call = tail call i32 @k()
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%cmp = icmp slt i32 %call, 1
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; CHECK: bgtzc
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br i1 %cmp, label %if.then, label %if.end
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if.then: ; preds = %entry:
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; STATIC: nop
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; STATIC: jal
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tail call void @f(i32 signext 1)
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br label %if.end
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if.end: ; preds = %if.then, %entry
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; CHECK: jrc $ra
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ret void
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}
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; Function Attrs: nounwind
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define void @l5() {
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entry:
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; PIC: jalrc $25
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%call = tail call i32 @k()
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; PIC: jalrc $25
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%cmp = icmp sgt i32 %call, 0
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; CHECK: blezc
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br i1 %cmp, label %if.then, label %if.end
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if.then: ; preds = %entry:
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; STATIC: nop
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; STATIC: jal
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; PIC: jalrc $25
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tail call void @f(i32 signext 2)
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br label %if.end
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if.end: ; preds = %if.then, %entry
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; CHECK: jrc $ra
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ret void
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}
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; Function Attrs: nounwind
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define void @l6() {
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entry:
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; PIC: jalrc $25
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%call = tail call i32 @k()
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; PIC: jalrc $25
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%cmp = icmp sgt i32 %call, -1
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; CHECK: bltzc
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br i1 %cmp, label %if.then, label %if.end
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if.then: ; preds = %entry:
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; STATIC: nop
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; STATIC: jal
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; PIC: jalrc $25
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tail call void @f(i32 signext 3)
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br label %if.end
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if.end: ; preds = %if.then, %entry
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; CHECK: jrc $ra
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ret void
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}
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; Function Attrs: nounwind
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define void @l7() {
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entry:
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; PIC: jalrc $25
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%call = tail call i32 @k()
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%cmp = icmp eq i32 %call, 0
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; CHECK: bnezc
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br i1 %cmp, label %if.then, label %if.end
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if.then: ; preds = %entry:
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; STATIC: nop
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; STATIC: jal
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; PIC: jalrc $25
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tail call void @f(i32 signext 4)
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br label %if.end
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if.end: ; preds = %if.then, %entry
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; CHECK: jrc $ra
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ret void
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}
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; Function Attrs: nounwind
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define void @l8() {
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entry:
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; PIC: jalrc $25
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%call = tail call i32 @k()
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%cmp = icmp eq i32 %call, 0
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; CHECK: beqzc
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br i1 %cmp, label %if.end, label %if.then
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if.then: ; preds = %entry:
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; STATIC: nop
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; STATIC: jal
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; PIC: jalrc $25
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tail call void @f(i32 signext 5)
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br label %if.end
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if.end: ; preds = %entry, %if.then
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; CHECK: jrc $ra
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ret void
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}
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define i32 @l9(i8* ()* %i) #0 {
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entry:
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%i.addr = alloca i8* ()*, align 4
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store i8* ()* %i, i8* ()** %i.addr, align 4
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; STATIC32: jal
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; STATIC32: nop
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; PIC: jalrc $25
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%call = call i32 @k()
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; PIC: jalrc $25
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%cmp = icmp ne i32 %call, 0
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; CHECK: beqzc
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br i1 %cmp, label %if.then, label %if.end
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if.then: ; preds = %entry
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%0 = load i8* ()*, i8* ()** %i.addr, align 4
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; CHECK: jalrc $25
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%call1 = call i8* %0()
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br label %if.end
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if.end: ; preds = %if.then, %entry
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; CHECK: jrc $ra
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ret i32 -1
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}
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