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93 lines
2.4 KiB
LLVM
93 lines
2.4 KiB
LLVM
; RUN: opt < %s -indvars -S | FileCheck %s
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define void @test1() nounwind {
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entry:
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br label %bb
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bb: ; preds = %bb, %entry
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%x.0.reg2mem.0 = phi double [ 0.000000e+00, %entry ], [ %1, %bb ] ; <double> [#uses=2]
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%0 = tail call i32 @foo(double %x.0.reg2mem.0) nounwind ; <i32> [#uses=0]
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%1 = fadd double %x.0.reg2mem.0, 1.000000e+00 ; <double> [#uses=2]
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%2 = fcmp olt double %1, 1.000000e+04 ; <i1> [#uses=1]
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br i1 %2, label %bb, label %return
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return: ; preds = %bb
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ret void
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; CHECK: @test1
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; CHECK: icmp
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}
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declare i32 @foo(double)
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define void @test2() nounwind {
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entry:
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br label %bb
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bb: ; preds = %bb, %entry
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%x.0.reg2mem.0 = phi double [ -10.000000e+00, %entry ], [ %1, %bb ] ; <double> [#uses=2]
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%0 = tail call i32 @foo(double %x.0.reg2mem.0) nounwind ; <i32> [#uses=0]
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%1 = fadd double %x.0.reg2mem.0, 2.000000e+00 ; <double> [#uses=2]
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%2 = fcmp olt double %1, -1.000000e+00 ; <i1> [#uses=1]
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br i1 %2, label %bb, label %return
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return: ; preds = %bb
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ret void
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; CHECK: @test2
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; CHECK: icmp
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}
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define void @test3() nounwind {
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entry:
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br label %bb
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bb: ; preds = %bb, %entry
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%x.0.reg2mem.0 = phi double [ 0.000000e+00, %entry ], [ %1, %bb ]
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%0 = tail call i32 @foo(double %x.0.reg2mem.0) nounwind
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%1 = fadd double %x.0.reg2mem.0, 1.000000e+00
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%2 = fcmp olt double %1, -1.000000e+00
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br i1 %2, label %bb, label %return
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return:
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ret void
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; CHECK: @test3
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; CHECK: fcmp
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}
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define void @test4() nounwind {
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entry:
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br label %bb
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bb: ; preds = %bb, %entry
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%x.0.reg2mem.0 = phi double [ 40.000000e+00, %entry ], [ %1, %bb ] ; <double> [#uses=2]
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%0 = tail call i32 @foo(double %x.0.reg2mem.0) nounwind ; <i32> [#uses=0]
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%1 = fadd double %x.0.reg2mem.0, -1.000000e+00 ; <double> [#uses=2]
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%2 = fcmp olt double %1, 1.000000e+00 ; <i1> [#uses=1]
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br i1 %2, label %bb, label %return
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return:
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ret void
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; CHECK: @test4
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; CHECK-NOT: cmp
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; CHECK: br i1 false
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}
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; PR6761
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define void @test5() nounwind {
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; <label>:0
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br label %1
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; <label>:1 ; preds = %1, %0
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%2 = phi double [ 9.000000e+00, %0 ], [ %4, %1 ] ; <double> [#uses=1]
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%3 = tail call i32 @foo(double 0.0) ; <i32> [#uses=0]
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%4 = fadd double %2, -1.000000e+00 ; <double> [#uses=2]
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%5 = fcmp ult double %4, 0.000000e+00 ; <i1> [#uses=1]
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br i1 %5, label %exit, label %1
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exit:
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ret void
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; CHECK: @test5
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; CHECK: icmp slt i32 {{.*}}, 0
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; CHECK-NEXT: br i1
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}
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