d0022a7250
Now we won't copy the byval parameter (bigger than 8 bytes) to caller's parameter save area. Instead, we will only copy the byval parameter when it can not be passed entirely in registers which means we have to use parameter save area according to the 64 bit SVR4 ABI. Reviewed By: jsji Differential Revision: https://reviews.llvm.org/D111485
58 lines
2.0 KiB
LLVM
58 lines
2.0 KiB
LLVM
; RUN: llc -verify-machineinstrs -O1 < %s -mcpu=pwr7 | FileCheck %s
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target datalayout = "E-m:e-i64:64-n32:64"
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target triple = "powerpc64-unknown-linux-gnu"
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%struct.test = type { i64, [8 x i8] }
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%struct.pad = type { [8 x i64] }
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@gt = common global %struct.test zeroinitializer, align 16
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@gp = common global %struct.pad zeroinitializer, align 8
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define signext i32 @callee1(i32 signext %x, %struct.test* byval(%struct.test) align 16 nocapture readnone %y, i32 signext %z) {
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entry:
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ret i32 %z
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}
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; CHECK-LABEL: @callee1
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; CHECK: mr 3, 7
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; CHECK: blr
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declare signext i32 @test1(i32 signext, %struct.test* byval(%struct.test) align 16, i32 signext)
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define void @caller1(i32 signext %z) {
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entry:
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%call = tail call signext i32 @test1(i32 signext 0, %struct.test* byval(%struct.test) align 16 @gt, i32 signext %z)
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ret void
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}
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; CHECK-LABEL: @caller1
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; CHECK: mr 7, 3
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; CHECK: bl test1
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define i64 @callee2(%struct.pad* byval(%struct.pad) nocapture readnone %x, i32 signext %y, %struct.test* byval(%struct.test) align 16 nocapture readonly %z) {
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entry:
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%x1 = getelementptr inbounds %struct.test, %struct.test* %z, i64 0, i32 0
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%0 = load i64, i64* %x1, align 16
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ret i64 %0
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}
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; CHECK-LABEL: @callee2
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; CHECK: ld {{[0-9]+}}, 128(1)
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; CHECK: blr
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declare i64 @test2(%struct.pad* byval(%struct.pad), i32 signext, %struct.test* byval(%struct.test) align 16)
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define void @caller2(i64 %z) {
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entry:
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%tmp = alloca %struct.test, align 16
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%.compoundliteral.sroa.0.0..sroa_idx = getelementptr inbounds %struct.test, %struct.test* %tmp, i64 0, i32 0
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store i64 %z, i64* %.compoundliteral.sroa.0.0..sroa_idx, align 16
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%call = call i64 @test2(%struct.pad* byval(%struct.pad) @gp, i32 signext 0, %struct.test* byval(%struct.test) align 16 %tmp)
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ret void
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}
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; CHECK-LABEL: @caller2
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; CHECK-DAG: std 3, [[OFF:[0-9]+]](1)
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; CHECK-DAG: addi [[REG1:[0-9]+]], 1, [[OFF]]
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;
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; CHECK-DAG: lxvw4x [[REG2:[0-9]+]], 0, [[REG1]]
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; CHECK-DAG: li [[REG3:[0-9]+]], 128
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; CHECK: stxvw4x 0, 1, [[REG3]]
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; CHECK: bl test2
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