47 lines
1.6 KiB
LLVM
47 lines
1.6 KiB
LLVM
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; RUN: llc -march=hexagon -mcpu=hexagonv65 < %s | FileCheck %s
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; REQUIRES: hexagon
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; C file was:
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; struct S { int a[3];};
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; void foo(int x, struct S arg1, struct S arg2);
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; void bar() {
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; struct S s;
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; s.a[0] = 9;
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; foo(42, s, s);
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; }
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; Test that while passing a 12-byte struct on the stack, the
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; struct is aligned to 4 bytes since its largest member is of type int.
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; Previously, the struct was being aligned to 8 bytes
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; CHECK: memw(r{{[0-9]+}}+#12) = #9
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; Check that the flag hexagon-disable-args-min-alignment works and the struct
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; is aligned to 8 bytes.
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; RUN: llc -march=hexagon -mcpu=hexagonv65 -hexagon-disable-args-min-alignment < %s | FileCheck -check-prefix=HEXAGON_LEGACY %s
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; HEXAGON_LEGACY: memw(r{{[0-9]+}}+#16) = #9
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%struct.S = type { [3 x i32] }
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; Function Attrs: nounwind
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define dso_local void @bar() local_unnamed_addr #0 {
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entry:
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%s = alloca %struct.S, align 4
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%0 = bitcast %struct.S* %s to i8*
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call void @llvm.lifetime.start.p0i8(i64 12, i8* nonnull %0) #3
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%arrayidx = getelementptr inbounds %struct.S, %struct.S* %s, i32 0, i32 0, i32 0
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store i32 9, i32* %arrayidx, align 4
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tail call void @foo(i32 42, %struct.S* nonnull byval(%struct.S) align 4 %s, %struct.S* nonnull byval(%struct.S) align 4 %s) #3
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call void @llvm.lifetime.end.p0i8(i64 12, i8* nonnull %0) #3
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ret void
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}
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; Function Attrs: argmemonly nounwind willreturn
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declare void @llvm.lifetime.start.p0i8(i64 immarg, i8* nocapture) #1
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declare dso_local void @foo(i32, %struct.S* byval(%struct.S) align 4, %struct.S* byval(%struct.S) align 4) local_unnamed_addr #2
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; Function Attrs: argmemonly nounwind willreturn
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declare void @llvm.lifetime.end.p0i8(i64 immarg, i8* nocapture) #1
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