95bda510fb
This is to simplify icmp instructions in the form like: %cmp = icmp eq i32 (i8*, i8*)* bitcast (i32 (i32**, i32**)* @f32 to i32 %(i8*, i8*)), bitcast (i32 (i64**, i64**) @f64 to i32 (i8*, i8*)*) Here @f32 and @f64 are two functions. Differential Revision: https://reviews.llvm.org/D87850
31 lines
908 B
LLVM
31 lines
908 B
LLVM
; RUN: opt < %s -instcombine -S | FileCheck %s
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declare i32 @f32(i32**, i32**)
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declare i32 @f64(i64**, i64**)
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define i1 @icmp_func() {
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; CHECK-LABEL: @icmp_func(
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; CHECK: ret i1 false
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%cmp = icmp eq i32 (i8*, i8*)* bitcast (i32 (i32**, i32**)* @f32 to i32 (i8*, i8*)*), bitcast (i32 (i64**, i64**)* @f64 to i32 (i8*, i8*)*)
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ret i1 %cmp
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}
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define i1 @icmp_fptr(i32 (i8*, i8*)*) {
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; CHECK-LABEL: @icmp_fptr(
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; CHECK: %cmp = icmp ne i32 (i8*, i8*)* %0, bitcast (i32 (i32**, i32**)* @f32 to i32 (i8*, i8*)*)
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; CHECK: ret i1 %cmp
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%cmp = icmp ne i32 (i8*, i8*)* bitcast (i32 (i32**, i32**)* @f32 to i32 (i8*, i8*)*), %0
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ret i1 %cmp
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}
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@b = external global i32
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define i32 @icmp_glob(i32 %x, i32 %y) {
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; CHECK-LABEL: define i32 @icmp_glob(i32 %x, i32 %y)
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; CHECK-NEXT: ret i32 %y
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;
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%sel = select i1 icmp eq (i32* bitcast (i32 (i32, i32)* @icmp_glob to i32*), i32* @b), i32 %x, i32 %y
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ret i32 %sel
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}
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