340 lines
6.4 KiB
LLVM
340 lines
6.4 KiB
LLVM
; RUN: opt %s -S -simplifycfg | FileCheck %s
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declare void @is(i1)
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; If A == B is false then A == B is implied false.
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; CHECK-LABEL: @test_eq_eq
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; CHECK-NOT: call void @is(i1 true)
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; CHECK: call void @is(i1 false)
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define void @test_eq_eq(i32 %a, i32 %b) {
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%cmp1 = icmp eq i32 %a, %b
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br i1 %cmp1, label %untaken, label %taken
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taken:
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%cmp2 = icmp eq i32 %a, %b
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br i1 %cmp2, label %istrue, label %isfalse
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istrue:
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call void @is(i1 true)
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ret void
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isfalse:
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call void @is(i1 false)
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ret void
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untaken:
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ret void
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}
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; If A == B is false then A != B is implied true.
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; CHECK-LABEL: @test_eq_ne
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; CHECK: call void @is(i1 true)
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; CHECK-NOT: call void @is(i1 false)
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define void @test_eq_ne(i32 %a, i32 %b) {
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%cmp1 = icmp eq i32 %a, %b
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br i1 %cmp1, label %untaken, label %taken
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taken:
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%cmp2 = icmp ne i32 %a, %b
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br i1 %cmp2, label %istrue, label %isfalse
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istrue:
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call void @is(i1 true)
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ret void
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isfalse:
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call void @is(i1 false)
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ret void
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untaken:
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ret void
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}
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; If A != B is false then A != B is implied false.
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; CHECK-LABEL: @test_ne_ne
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; CHECK-NOT: call void @is(i1 true)
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; CHECK: call void @is(i1 false)
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define void @test_ne_ne(i32 %a, i32 %b) {
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%cmp1 = icmp ne i32 %a, %b
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br i1 %cmp1, label %untaken, label %taken
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taken:
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%cmp2 = icmp ne i32 %a, %b
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br i1 %cmp2, label %istrue, label %isfalse
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istrue:
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call void @is(i1 true)
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ret void
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isfalse:
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call void @is(i1 false)
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ret void
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untaken:
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ret void
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}
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; If A != B is false then A >u B is implied false.
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; CHECK-LABEL: @test_ne_ugt
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; CHECK-NOT: call void @is(i1 true)
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; CHECK: call void @is(i1 false)
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define void @test_ne_ugt(i32 %a, i32 %b) {
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%cmp1 = icmp ne i32 %a, %b
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br i1 %cmp1, label %untaken, label %taken
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taken:
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%cmp2 = icmp ugt i32 %a, %b
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br i1 %cmp2, label %istrue, label %isfalse
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istrue:
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call void @is(i1 true)
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ret void
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isfalse:
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call void @is(i1 false)
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ret void
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untaken:
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ret void
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}
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; If A != B is false then A >=u B is implied true.
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; CHECK-LABEL: @test_ne_uge
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; CHECK: call void @is(i1 true)
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; CHECK-NOT: call void @is(i1 false)
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define void @test_ne_uge(i32 %a, i32 %b) {
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%cmp1 = icmp ne i32 %a, %b
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br i1 %cmp1, label %untaken, label %taken
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taken:
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%cmp2 = icmp uge i32 %a, %b
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br i1 %cmp2, label %istrue, label %isfalse
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istrue:
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call void @is(i1 true)
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ret void
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isfalse:
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call void @is(i1 false)
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ret void
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untaken:
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ret void
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}
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; If A != B is false then A <u B is implied false.
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; CHECK-LABEL: @test_ne_ult
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; CHECK-NOT: call void @is(i1 true)
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; CHECK: call void @is(i1 false)
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define void @test_ne_ult(i32 %a, i32 %b) {
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%cmp1 = icmp ne i32 %a, %b
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br i1 %cmp1, label %untaken, label %taken
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taken:
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%cmp2 = icmp ult i32 %a, %b
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br i1 %cmp2, label %istrue, label %isfalse
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istrue:
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call void @is(i1 true)
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ret void
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isfalse:
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call void @is(i1 false)
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ret void
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untaken:
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ret void
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}
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; If A != B is false then A <=u B is implied true.
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; CHECK-LABEL: @test_ne_ule
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; CHECK: call void @is(i1 true)
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; CHECK-NOT: call void @is(i1 false)
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define void @test_ne_ule(i32 %a, i32 %b) {
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%cmp1 = icmp ne i32 %a, %b
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br i1 %cmp1, label %untaken, label %taken
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taken:
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%cmp2 = icmp ule i32 %a, %b
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br i1 %cmp2, label %istrue, label %isfalse
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istrue:
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call void @is(i1 true)
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ret void
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isfalse:
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call void @is(i1 false)
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ret void
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untaken:
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ret void
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}
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; If A >u B is false then A >u B is implied false.
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; CHECK-LABEL: @test_ugt_ugt
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; CHECK-NOT: call void @is(i1 true)
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; CHECK: call void @is(i1 false)
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define void @test_ugt_ugt(i32 %a, i32 %b) {
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%cmp1 = icmp ugt i32 %a, %b
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br i1 %cmp1, label %untaken, label %taken
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taken:
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%cmp2 = icmp ugt i32 %a, %b
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br i1 %cmp2, label %istrue, label %isfalse
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istrue:
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call void @is(i1 true)
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ret void
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isfalse:
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call void @is(i1 false)
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ret void
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untaken:
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ret void
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}
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; If A >u B is false then A <=u B is implied true.
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; CHECK-LABEL: @test_ugt_ule
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; CHECK: call void @is(i1 true)
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; CHECK-NOT: call void @is(i1 false)
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define void @test_ugt_ule(i32 %a, i32 %b) {
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%cmp1 = icmp ugt i32 %a, %b
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br i1 %cmp1, label %untaken, label %taken
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taken:
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%cmp2 = icmp ule i32 %a, %b
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br i1 %cmp2, label %istrue, label %isfalse
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istrue:
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call void @is(i1 true)
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ret void
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isfalse:
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call void @is(i1 false)
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ret void
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untaken:
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ret void
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}
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; If A >=u B is false then A >=u B is implied false.
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; CHECK-LABEL: @test_uge_uge
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; CHECK-NOT: call void @is(i1 true)
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; CHECK: call void @is(i1 false)
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define void @test_uge_uge(i32 %a, i32 %b) {
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%cmp1 = icmp uge i32 %a, %b
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br i1 %cmp1, label %untaken, label %taken
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taken:
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%cmp2 = icmp uge i32 %a, %b
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br i1 %cmp2, label %istrue, label %isfalse
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istrue:
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call void @is(i1 true)
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ret void
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isfalse:
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call void @is(i1 false)
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ret void
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untaken:
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ret void
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}
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; If A >=u B is false then A <u B is implied true.
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; CHECK-LABEL: @test_uge_ult
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; CHECK: call void @is(i1 true)
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; CHECK-NOT: call void @is(i1 false)
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define void @test_uge_ult(i32 %a, i32 %b) {
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%cmp1 = icmp uge i32 %a, %b
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br i1 %cmp1, label %untaken, label %taken
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taken:
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%cmp2 = icmp ult i32 %a, %b
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br i1 %cmp2, label %istrue, label %isfalse
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istrue:
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call void @is(i1 true)
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ret void
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isfalse:
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call void @is(i1 false)
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ret void
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untaken:
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ret void
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}
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; If A >=u B is false then A <=u B is implied true.
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; CHECK-LABEL: @test_uge_ule
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; CHECK: call void @is(i1 true)
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; CHECK-NOT: call void @is(i1 false)
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define void @test_uge_ule(i32 %a, i32 %b) {
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%cmp1 = icmp uge i32 %a, %b
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br i1 %cmp1, label %untaken, label %taken
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taken:
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%cmp2 = icmp ule i32 %a, %b
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br i1 %cmp2, label %istrue, label %isfalse
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istrue:
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call void @is(i1 true)
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ret void
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isfalse:
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call void @is(i1 false)
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ret void
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untaken:
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ret void
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}
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; If A <u B is false then A <u B is implied false.
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; CHECK-LABEL: @test_ult_ult
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; CHECK-NOT: call void @is(i1 true)
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; CHECK: call void @is(i1 false)
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define void @test_ult_ult(i32 %a, i32 %b) {
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%cmp1 = icmp ult i32 %a, %b
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br i1 %cmp1, label %untaken, label %taken
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taken:
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%cmp2 = icmp ult i32 %a, %b
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br i1 %cmp2, label %istrue, label %isfalse
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istrue:
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call void @is(i1 true)
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ret void
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isfalse:
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call void @is(i1 false)
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ret void
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untaken:
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ret void
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}
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; If A <=u B is false then A <=u B is implied false.
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; CHECK-LABEL: @test_ule_ule
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; CHECK-NOT: call void @is(i1 true)
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; CHECK: call void @is(i1 false)
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define void @test_ule_ule(i32 %a, i32 %b) {
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%cmp1 = icmp ule i32 %a, %b
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br i1 %cmp1, label %untaken, label %taken
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taken:
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%cmp2 = icmp ule i32 %a, %b
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br i1 %cmp2, label %istrue, label %isfalse
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istrue:
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call void @is(i1 true)
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ret void
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isfalse:
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call void @is(i1 false)
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ret void
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untaken:
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ret void
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}
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