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