forked from OSchip/llvm-project
35 lines
971 B
LLVM
35 lines
971 B
LLVM
; RUN: opt -S -instcombine < %s | FileCheck %s
|
|
|
|
@g = external global i32
|
|
|
|
define i1 @test(i32 %other) {
|
|
; CHECK-LABEL: @test
|
|
; CHECK: %test = icmp sgt i32 %other, 0
|
|
%positive = load i32, i32* @g, !range !{i32 1, i32 2048}
|
|
%cmp = icmp slt i32 %positive, %other
|
|
%sel = select i1 %cmp, i32 %positive, i32 %other
|
|
%test = icmp sgt i32 %sel, 0
|
|
ret i1 %test
|
|
}
|
|
|
|
define i1 @test2(i32 %other) {
|
|
; CHECK-LABEL: @test2
|
|
; CHECK: %test = icmp sgt i32 %other, 0
|
|
%positive = load i32, i32* @g, !range !{i32 1, i32 2048}
|
|
%cmp = icmp slt i32 %other, %positive
|
|
%sel = select i1 %cmp, i32 %other, i32 %positive
|
|
%test = icmp sgt i32 %sel, 0
|
|
ret i1 %test
|
|
}
|
|
|
|
; %positive might be zero
|
|
define i1 @test3(i32 %other) {
|
|
; CHECK-LABEL: @test3
|
|
; CHECK: %test = icmp sgt i32 %sel, 0
|
|
%positive = load i32, i32* @g, !range !{i32 0, i32 2048}
|
|
%cmp = icmp slt i32 %positive, %other
|
|
%sel = select i1 %cmp, i32 %positive, i32 %other
|
|
%test = icmp sgt i32 %sel, 0
|
|
ret i1 %test
|
|
}
|