585c85abe5
To store a byval parameter the existing code would store as many 8 byte elements as was required to store the full size of the byval parameter. For example, a paramter of size 16 would store two element of 8 bytes. A paramter of size 12 would also store two elements of 8 bytes. This would sometimes store too many bytes as the size of the paramter is not always a factor of 8. This patch fixes that issue and now byval paramters are stored with the correct number of bytes. Reviewed By: nemanjai, #powerpc, quinnp, amyk Differential Revision: https://reviews.llvm.org/D121430
42 lines
1.2 KiB
LLVM
42 lines
1.2 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc -verify-machineinstrs < %s | FileCheck %s
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target datalayout = "e-m:e-i64:64-n32:64-S128-v256:256:256-v512:512:512"
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target triple = "powerpc64le-unknown-linux-gnu"
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%struct = type { [4 x i32], [20 x i8] }
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declare dso_local i32 @foo1(%struct* byval(%struct) %var)
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declare dso_local void @foo(%struct* %var)
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; check that 36bytes byval parameter is passed all in registers.
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define dso_local i32 @bar() {
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; CHECK-LABEL: bar:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: mflr 0
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; CHECK-NEXT: std 0, 16(1)
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; CHECK-NEXT: stdu 1, -80(1)
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; CHECK-NEXT: .cfi_def_cfa_offset 80
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; CHECK-NEXT: .cfi_offset lr, 16
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; CHECK-NEXT: addi 3, 1, 40
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; CHECK-NEXT: bl foo
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; CHECK-NEXT: nop
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; CHECK-NEXT: lwz 7, 72(1)
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; CHECK-NEXT: ld 6, 64(1)
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; CHECK-NEXT: ld 5, 56(1)
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; CHECK-NEXT: ld 4, 48(1)
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; CHECK-NEXT: ld 3, 40(1)
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; CHECK-NEXT: bl foo1
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; CHECK-NEXT: nop
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; CHECK-NEXT: addi 1, 1, 80
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; CHECK-NEXT: ld 0, 16(1)
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; CHECK-NEXT: mtlr 0
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; CHECK-NEXT: blr
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entry:
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%x = alloca %struct, align 4
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call void @foo(%struct* %x)
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%r = call i32 @foo1(%struct* byval(%struct) %x)
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ret i32 %r
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}
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