derek.holloway
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68 lines
2.0 KiB
LLVM
68 lines
2.0 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -passes=instsimplify -S < %s | FileCheck %s
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@A = linkonce_odr hidden constant { i64, i64 } { i64 2, i64 3 }
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@B = linkonce_odr hidden global { i64, i64 } { i64 2, i64 3 }
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declare ptr @llvm.strip.invariant.group.p0(ptr %p)
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declare ptr @llvm.launder.invariant.group.p0(ptr %p)
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define i64 @f() {
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; CHECK-LABEL: @f(
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; CHECK-NEXT: ret i64 3
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;
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%a = call ptr @llvm.strip.invariant.group.p0(ptr @A)
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%b = getelementptr i8, ptr %a, i32 8
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%d = load i64, ptr %b
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ret i64 %d
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}
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define i64 @g() {
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; CHECK-LABEL: @g(
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; CHECK-NEXT: ret i64 3
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;
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%a = call ptr @llvm.launder.invariant.group.p0(ptr @A)
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%b = getelementptr i8, ptr %a, i32 8
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%d = load i64, ptr %b
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ret i64 %d
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}
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define i64 @notconstantglobal() {
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; CHECK-LABEL: @notconstantglobal(
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; CHECK-NEXT: [[A:%.*]] = call ptr @llvm.launder.invariant.group.p0(ptr @B)
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; CHECK-NEXT: [[B:%.*]] = getelementptr i8, ptr [[A]], i32 8
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; CHECK-NEXT: [[D:%.*]] = load i64, ptr [[B]], align 4
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; CHECK-NEXT: ret i64 [[D]]
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;
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%a = call ptr @llvm.launder.invariant.group.p0(ptr @B)
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%b = getelementptr i8, ptr %a, i32 8
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%d = load i64, ptr %b
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ret i64 %d
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}
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define i64 @notconstantgepindex(i32 %i) {
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; CHECK-LABEL: @notconstantgepindex(
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; CHECK-NEXT: [[A:%.*]] = call ptr @llvm.launder.invariant.group.p0(ptr @A)
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; CHECK-NEXT: [[B:%.*]] = getelementptr i8, ptr [[A]], i32 [[I:%.*]]
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; CHECK-NEXT: [[D:%.*]] = load i64, ptr [[B]], align 4
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; CHECK-NEXT: ret i64 [[D]]
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;
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%a = call ptr @llvm.launder.invariant.group.p0(ptr @A)
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%b = getelementptr i8, ptr %a, i32 %i
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%d = load i64, ptr %b
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ret i64 %d
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}
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define i64 @volatile() {
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; CHECK-LABEL: @volatile(
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; CHECK-NEXT: [[A:%.*]] = call ptr @llvm.launder.invariant.group.p0(ptr @A)
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; CHECK-NEXT: [[B:%.*]] = getelementptr i8, ptr [[A]], i32 8
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; CHECK-NEXT: [[D:%.*]] = load volatile i64, ptr [[B]], align 4
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; CHECK-NEXT: ret i64 [[D]]
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;
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%a = call ptr @llvm.launder.invariant.group.p0(ptr @A)
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%b = getelementptr i8, ptr %a, i32 8
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%d = load volatile i64, ptr %b
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ret i64 %d
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}
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