c23b4fbdbb
Now that #149310 has restricted lifetime intrinsics to only work on allocas, we can also drop the explicit size argument. Instead, the size is implied by the alloca. This removes the ability to only mark a prefix of an alloca alive/dead. We never used that capability, so we should remove the need to handle that possibility everywhere (though many key places, including stack coloring, did not actually respect this).
62 lines
2.4 KiB
LLVM
62 lines
2.4 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -passes='sroa<preserve-cfg>' -S | FileCheck %s --check-prefixes=CHECK,CHECK-PRESERVE-CFG
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; RUN: opt < %s -passes='sroa<modify-cfg>' -S | FileCheck %s --check-prefixes=CHECK,CHECK-MODIFY-CFG
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%i32x2 = type { [2 x i32] }
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; Note %arr is the union
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; union {
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; int i[2];
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; short s[4];
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; };
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define i16 @with_lifetime(i32 %a, i32 %b) #0 {
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; CHECK-LABEL: @with_lifetime(
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; CHECK-NEXT: [[ARR_SROA_0_0_EXTRACT_TRUNC:%.*]] = trunc i32 [[A:%.*]] to i16
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; CHECK-NEXT: [[ARR_SROA_4_4_EXTRACT_TRUNC:%.*]] = trunc i32 [[B:%.*]] to i16
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; CHECK-NEXT: [[RET:%.*]] = add i16 [[ARR_SROA_0_0_EXTRACT_TRUNC]], [[ARR_SROA_4_4_EXTRACT_TRUNC]]
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; CHECK-NEXT: ret i16 [[RET]]
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;
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%arr = alloca %i32x2, align 4
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call void @llvm.lifetime.start.p0(ptr %arr)
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%p1 = getelementptr inbounds %i32x2, ptr %arr, i64 0, i32 0, i32 1
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store i32 %a, ptr %arr, align 4
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store i32 %b, ptr %p1, align 4
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%s0 = load i16, ptr %arr, align 4
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%s2 = load i16, ptr %p1, align 4
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%ret = add i16 %s0, %s2
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call void @llvm.lifetime.end.p0(ptr %arr)
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ret i16 %ret
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}
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define i16 @no_lifetime(i32 %a, i32 %b) #0 {
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; CHECK-LABEL: @no_lifetime(
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; CHECK-NEXT: [[ARR_SROA_0_0_EXTRACT_TRUNC:%.*]] = trunc i32 [[A:%.*]] to i16
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; CHECK-NEXT: [[ARR_SROA_2_0_EXTRACT_SHIFT:%.*]] = lshr i32 [[A]], 16
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; CHECK-NEXT: [[ARR_SROA_2_0_EXTRACT_TRUNC:%.*]] = trunc i32 [[ARR_SROA_2_0_EXTRACT_SHIFT]] to i16
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; CHECK-NEXT: [[ARR_SROA_21_4_EXTRACT_TRUNC:%.*]] = trunc i32 [[B:%.*]] to i16
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; CHECK-NEXT: [[ARR_SROA_4_4_EXTRACT_SHIFT:%.*]] = lshr i32 [[B]], 16
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; CHECK-NEXT: [[ARR_SROA_4_4_EXTRACT_TRUNC:%.*]] = trunc i32 [[ARR_SROA_4_4_EXTRACT_SHIFT]] to i16
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; CHECK-NEXT: [[RET:%.*]] = add i16 [[ARR_SROA_0_0_EXTRACT_TRUNC]], [[ARR_SROA_21_4_EXTRACT_TRUNC]]
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; CHECK-NEXT: ret i16 [[RET]]
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;
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%arr = alloca %i32x2, align 4
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%p1 = getelementptr inbounds %i32x2, ptr %arr, i64 0, i32 0, i32 1
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store i32 %a, ptr %arr, align 4
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store i32 %b, ptr %p1, align 4
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%s0 = load i16, ptr %arr, align 4
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%s2 = load i16, ptr %p1, align 4
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%ret = add i16 %s0, %s2
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ret i16 %ret
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}
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declare void @llvm.lifetime.start.p0(ptr nocapture) #1
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declare void @llvm.lifetime.end.p0(ptr nocapture) #1
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attributes #0 = { alwaysinline nounwind }
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attributes #1 = { argmemonly nounwind }
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;; NOTE: These prefixes are unused and the list is autogenerated. Do not add tests below this line:
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; CHECK-MODIFY-CFG: {{.*}}
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; CHECK-PRESERVE-CFG: {{.*}}
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