120 lines
4 KiB
LLVM
120 lines
4 KiB
LLVM
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; RUN: llc -mtriple=aarch64-unknown-linux-gnu -aarch64-tbz-offset-bits=4 -aarch64-cbz-offset-bits=3 < %s | FileCheck %s
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;; Check that branch relaxation accounts for the size of xray EXIT sleds
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;; Note that TAIL_CALL sleds don't exist on AArch64 and don't need a test.
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define void @exit(i1 zeroext %0) nounwind "function-instrument"="xray-always" {
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; CHECK-LABEL: exit:
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; CHECK-NEXT: .Lfunc_begin0:
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; CHECK-NEXT: // %bb.0:
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; CHECK-NEXT: .p2align 2
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; CHECK-NEXT: .Lxray_sled_0:
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; CHECK-NEXT: b #32
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; CHECK-COUNT-7: nop
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; CHECK-NOT: nop
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; CHECK: tbnz
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; CHECK-SAME: [[FALLTHROUGH:.LBB[0-9_]+]]
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; CHECK-NEXT: b
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; CHECK-SAME: [[OUT_OF_RANGE:.LBB[0-9_]+]]
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; CHECK-NEXT: [[FALLTHROUGH]]:
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; CHECK-NEXT: bl bar
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; CHECK: .p2align 2
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; CHECK-NEXT: .Lxray_sled_1:
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; CHECK-NEXT: b #32
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; CHECK-COUNT-7: nop
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; CHECK-NOT: nop
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; CHECK-NEXT: .Ltmp1:
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; CHECK-NEXT: ret
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; CHECK-NEXT: [[OUT_OF_RANGE]]:
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; CHECK-SAME: // %end2
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; CHECK-NEXT: bl baz
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br i1 %0, label %end1, label %end2
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end1:
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%2 = call i32 @bar()
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ret void
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end2:
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%3 = call i32 @baz()
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ret void
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}
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;; Check that branch relaxation accounts for the size of xray EVENT sleds
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define void @customevent(i1 zeroext %0, ptr nocapture noundef readonly %e1, i64 noundef %s1, ptr nocapture noundef readonly %e2, i64 noundef %s2) "function-instrument"="xray-always" {
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; CHECK-LABEL: customevent:
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; CHECK-NEXT: .Lfunc_begin1:
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; CHECK-NEXT: .cfi_startproc
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; CHECK-NEXT: // %bb.0:
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; CHECK-NEXT: .p2align 2
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; CHECK-NEXT: .Lxray_sled_{{[0-9]+}}:
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; CHECK: cbnz
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; CHECK-SAME: [[FALLTHROUGH_2:.LBB[0-9_]+]]
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; CHECK-NEXT: b
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; CHECK-SAME: [[OUT_OF_RANGE_2:.LBB[0-9_]+]]
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; CHECK-NEXT: [[FALLTHROUGH_2]]:
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; CHECK-SAME: // %end1
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; CHECK-NEXT: .Lxray_sled_{{[0-9]+}}:
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; CHECK-NEXT: Begin XRay custom event
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; CHECK: bl __xray_CustomEvent
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; CHECK: End XRay custom event
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; CHECK-NEXT: [[OUT_OF_RANGE_2]]:
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; CHECK-SAME: // %end2
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; CHECK-NEXT: .Lxray_sled_{{[0-9]+}}:
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; CHECK-NEXT: Begin XRay custom event
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; CHECK: bl __xray_CustomEvent
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; CHECK: End XRay custom event
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; CHECK: .Ltmp
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; CHECK-NEXT: ret
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entry:
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br i1 %0, label %end1, label %end2
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end1:
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call void @llvm.xray.customevent(ptr %e1, i64 %s1)
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br label %end2
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end2:
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tail call void @llvm.xray.customevent(ptr %e2, i64 %s2)
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ret void
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}
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;; Check that branch relaxation accounts for the size of xray TYPED_EVENT sleds
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define void @typedevent(i1 zeroext %0, i64 noundef %type, ptr nocapture noundef readonly %event, i64 noundef %size) "function-instrument"="xray-always" {
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; CHECK-LABEL: typedevent:
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; CHECK-NEXT: .Lfunc_begin2:
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; CHECK-NEXT: .cfi_startproc
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; CHECK-NEXT: // %bb.0:
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; CHECK-NEXT: .p2align 2
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; CHECK-NEXT: .Lxray_sled_{{[0-9]+}}:
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; CHECK: cbnz
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; CHECK-SAME: [[FALLTHROUGH_3:.LBB[0-9_]+]]
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; CHECK-NEXT: b
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; CHECK-SAME: [[OUT_OF_RANGE_3:.LBB[0-9_]+]]
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; CHECK-NEXT: [[FALLTHROUGH_3]]:
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; CHECK-SAME: // %end1
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; CHECK-NEXT: .Lxray_sled_{{[0-9]+}}:
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; CHECK-NEXT: Begin XRay typed event
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; CHECK: bl __xray_TypedEvent
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; CHECK: End XRay typed event
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; CHECK-NEXT: [[OUT_OF_RANGE_3]]:
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; CHECK-SAME: // %end2
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; CHECK-NEXT: .Lxray_sled_{{[0-9]+}}:
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; CHECK-NEXT: Begin XRay typed event
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; CHECK: bl __xray_TypedEvent
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; CHECK: End XRay typed event
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; CHECK: .Ltmp
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; CHECK-NEXT: ret
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entry:
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br i1 %0, label %end1, label %end2
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end1:
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call void @llvm.xray.typedevent(i64 %type, ptr %event, i64 %size)
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br label %end2
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end2:
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tail call void @llvm.xray.typedevent(i64 %size, ptr %event, i64 %type)
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ret void
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}
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declare void @llvm.xray.customevent(ptr, i64)
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declare void @llvm.xray.typedevent(i64, ptr, i64)
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declare i32 @bar()
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declare i32 @baz()
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