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https://github.com/c64scene-ar/llvm-6502.git
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c26292d4dc
Summary: If the src, dst and size of a memcpy are known to be 4 byte aligned we can call __memcpy_4() instead of memcpy(). Reviewers: robertlytton Reviewed By: robertlytton CC: llvm-commits Differential Revision: http://llvm-reviews.chandlerc.com/D2871 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@202395 91177308-0d34-0410-b5e6-96231b3b80d8
74 lines
1.6 KiB
LLVM
74 lines
1.6 KiB
LLVM
; RUN: llc < %s -march=xcore | FileCheck %s
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; CHECK-LABEL: f0Test
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; CHECK: entsp 1
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; CHECK: bl f0
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; CHECK: retsp 1
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%struct.st0 = type { [0 x i32] }
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declare void @f0(%struct.st0*) nounwind
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define void @f0Test(%struct.st0* byval %s0) nounwind {
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entry:
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call void @f0(%struct.st0* %s0) nounwind
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ret void
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}
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; CHECK-LABEL: f1Test
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; CHECK: entsp 13
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; CHECK: stw r4, sp[12]
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; CHECK: stw r5, sp[11]
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; CHECK: mov r4, r0
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; CHECK: ldaw r5, sp[1]
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; CHECK: ldc r2, 40
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; CHECK: mov r0, r5
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; CHECK: bl __memcpy_4
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; CHECK: mov r0, r5
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; CHECK: bl f1
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; CHECK: mov r0, r4
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; CHECK: ldw r5, sp[11]
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; CHECK: ldw r4, sp[12]
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; CHECK: retsp 13
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%struct.st1 = type { [10 x i32] }
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declare void @f1(%struct.st1*) nounwind
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define i32 @f1Test(i32 %i, %struct.st1* byval %s1) nounwind {
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entry:
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call void @f1(%struct.st1* %s1) nounwind
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ret i32 %i
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}
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; CHECK-LABEL: f2Test
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; CHECK: extsp 4
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; CHECK: stw lr, sp[1]
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; CHECK: stw r2, sp[3]
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; CHECK: stw r3, sp[4]
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; CHECK: ldw r0, r0[0]
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; CHECK: stw r0, sp[2]
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; CHECK: ldaw r2, sp[2]
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; CHECK: mov r0, r1
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; CHECK: mov r1, r2
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; CHECK: bl f2
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; CHECK: ldw lr, sp[1]
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; CHECK: ldaw sp, sp[4]
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; CHECK: retsp 0
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%struct.st2 = type { i32 }
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declare void @f2(i32, %struct.st2*) nounwind
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define void @f2Test(%struct.st2* byval %s2, i32 %i, ...) nounwind {
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entry:
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call void @f2(i32 %i, %struct.st2* %s2)
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ret void
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}
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; CHECK-LABEL: f3Test
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; CHECK: entsp 2
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; CHECK: ldc r1, 0
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; CHECK: ld8u r2, r0[r1]
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; CHECK: ldaw r0, sp[1]
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; CHECK: st8 r2, r0[r1]
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; CHECK: bl f
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; CHECK: retsp 2
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declare void @f3(i8*) nounwind
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define void @f3Test(i8* byval %v) nounwind {
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entry:
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call void @f3(i8* %v) nounwind
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ret void
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}
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