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TheRock/compiler/amd-llvm/llvm/test/Analysis/ValueTracking/known-bits-from-range-md.ll
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Flatten subprojects into a single base monorepo
2026-09-02 16:34:47 -07:00

35 lines
783 B
LLVM

; RUN: opt -S -passes=instsimplify,instcombine < %s | FileCheck %s
define i1 @test0(ptr %ptr) {
; CHECK-LABEL: @test0(
entry:
%val = load i8, ptr %ptr, !range !{i8 -50, i8 0}
%and = and i8 %val, 128
%is.eq = icmp eq i8 %and, 128
ret i1 %is.eq
; CHECK: ret i1 true
}
define i1 @test1(ptr %ptr) {
; CHECK-LABEL: @test1(
entry:
%val = load i8, ptr %ptr, !range !{i8 64, i8 128}
%and = and i8 %val, 64
%is.eq = icmp eq i8 %and, 64
ret i1 %is.eq
; CHECK: ret i1 true
}
define i1 @test2(ptr %ptr) {
; CHECK-LABEL: @test2(
entry:
; CHECK: %val = load i8
; CHECK: %and = and i8 %val
; CHECK: %is.eq = icmp ne i8 %and, 0
; CHECK: ret i1 %is.eq
%val = load i8, ptr %ptr, !range !{i8 64, i8 129}
%and = and i8 %val, 64
%is.eq = icmp eq i8 %and, 64
ret i1 %is.eq
}