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48 lines
1.0 KiB
LLVM
48 lines
1.0 KiB
LLVM
; RUN: opt < %s -instcombine -S | FileCheck %s
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; PR3021
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; When inst combining an FCMP with the LHS coming from a uitofp instruction, we
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; can't lower it to signed ICMP instructions.
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define i1 @test1(i32 %val) {
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%1 = uitofp i32 %val to double
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%2 = fcmp ole double %1, 0.000000e+00
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; CHECK: icmp eq i32 %val, 0
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ret i1 %2
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}
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define i1 @test2(i32 %val) {
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%1 = uitofp i32 %val to double
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%2 = fcmp olt double %1, 0.000000e+00
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ret i1 %2
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; CHECK: ret i1 false
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}
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define i1 @test3(i32 %val) {
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%1 = uitofp i32 %val to double
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%2 = fcmp oge double %1, 0.000000e+00
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ret i1 %2
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; CHECK: ret i1 true
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}
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define i1 @test4(i32 %val) {
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%1 = uitofp i32 %val to double
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%2 = fcmp ogt double %1, 0.000000e+00
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; CHECK: icmp ne i32 %val, 0
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ret i1 %2
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}
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define i1 @test5(i32 %val) {
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%1 = uitofp i32 %val to double
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%2 = fcmp ogt double %1, -4.400000e+00
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ret i1 %2
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; CHECK: ret i1 true
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}
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define i1 @test6(i32 %val) {
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%1 = uitofp i32 %val to double
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%2 = fcmp olt double %1, -4.400000e+00
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ret i1 %2
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; CHECK: ret i1 false
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}
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