derek.holloway
7502bf64a4
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92 lines
2.9 KiB
LLVM
92 lines
2.9 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -passes=instcombine -S < %s | FileCheck %s
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target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-grtev4-linux-gnu"
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define i32 @test_plain(i1 %f, ptr %a, ptr %b) {
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; CHECK-LABEL: @test_plain(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[B:%.*]] = select i1 [[F:%.*]], ptr [[A:%.*]], ptr [[B1:%.*]]
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; CHECK-NEXT: [[B_VAL:%.*]] = load i32, ptr [[B]], align 8
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; CHECK-NEXT: ret i32 [[B_VAL]]
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;
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entry:
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%sel = select i1 %f, ptr %a, ptr %b
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%l = load i32, ptr %sel, align 8
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ret i32 %l
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}
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; Don't speculate as the condition may control which memory is valid from
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; sanitizer perspective.
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define i32 @test_asan(i1 %f) sanitize_address {
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; CHECK-LABEL: @test_asan(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[A:%.*]] = alloca i32, align 8
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; CHECK-NEXT: [[B:%.*]] = alloca i32, align 8
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; CHECK-NEXT: [[SEL:%.*]] = select i1 [[F:%.*]], ptr [[A]], ptr [[B]]
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; CHECK-NEXT: [[L:%.*]] = load i32, ptr [[SEL]], align 8
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; CHECK-NEXT: ret i32 [[L]]
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;
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entry:
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%a = alloca i32, align 8
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%b = alloca i32, align 8
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%sel = select i1 %f, ptr %a, ptr %b
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%l = load i32, ptr %sel, align 8
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ret i32 %l
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}
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; Don't speculate as the condition may control which memory is valid from
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; sanitizer perspective.
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define i32 @test_hwasan(i1 %f) sanitize_hwaddress {
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; CHECK-LABEL: @test_hwasan(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[A:%.*]] = alloca i32, align 8
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; CHECK-NEXT: [[B:%.*]] = alloca i32, align 8
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; CHECK-NEXT: [[SEL:%.*]] = select i1 [[F:%.*]], ptr [[A]], ptr [[B]]
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; CHECK-NEXT: [[L:%.*]] = load i32, ptr [[SEL]], align 8
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; CHECK-NEXT: ret i32 [[L]]
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;
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entry:
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%a = alloca i32, align 8
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%b = alloca i32, align 8
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%sel = select i1 %f, ptr %a, ptr %b
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%l = load i32, ptr %sel, align 8
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ret i32 %l
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}
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; Don't speculate as the condition may control which memory is valid from
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; sanitizer perspective.
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define i32 @test_tsan(i1 %f) sanitize_thread {
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; CHECK-LABEL: @test_tsan(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[A:%.*]] = alloca i32, align 8
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; CHECK-NEXT: [[B:%.*]] = alloca i32, align 8
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; CHECK-NEXT: [[SEL:%.*]] = select i1 [[F:%.*]], ptr [[A]], ptr [[B]]
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; CHECK-NEXT: [[L:%.*]] = load i32, ptr [[SEL]], align 8
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; CHECK-NEXT: ret i32 [[L]]
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;
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entry:
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%a = alloca i32, align 8
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%b = alloca i32, align 8
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%sel = select i1 %f, ptr %a, ptr %b
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%l = load i32, ptr %sel, align 8
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ret i32 %l
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}
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; Msan just propagates shadow, even if speculated load accesses uninitialized
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; value, instrumentation will select shadow of the desired value anyway.
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define i32 @test_msan(i1 %f, ptr %a, ptr %b) sanitize_memory {
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; CHECK-LABEL: @test_msan(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[B:%.*]] = select i1 [[F:%.*]], ptr [[A:%.*]], ptr [[B1:%.*]]
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; CHECK-NEXT: [[B_VAL:%.*]] = load i32, ptr [[B]], align 8
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; CHECK-NEXT: ret i32 [[B_VAL]]
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;
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entry:
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%sel = select i1 %f, ptr %a, ptr %b
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%l = load i32, ptr %sel, align 8
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ret i32 %l
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}
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