mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-25 20:23:11 +01:00
65b8045fb3
I'm trying to preserve the intent of these tests by using non-undef operands; if we fix FP undef folding these tests will not pass. llvm-svn: 327004
34 lines
1.2 KiB
LLVM
34 lines
1.2 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
|
|
; RUN: opt -newgvn %s -S -o - | FileCheck %s
|
|
define hidden void @foo() {
|
|
; CHECK-LABEL: @foo(
|
|
; CHECK-NEXT: top:
|
|
; CHECK-NEXT: br label [[IF:%.*]]
|
|
; CHECK: if:
|
|
; CHECK-NEXT: [[TMP0:%.*]] = phi double [ [[TMP1:%.*]], [[IF]] ], [ undef, [[TOP:%.*]] ]
|
|
; CHECK-NEXT: [[TMP1]] = fadd double [[TMP0]], 1.000000e+00
|
|
; CHECK-NEXT: br i1 false, label [[L50:%.*]], label [[IF]]
|
|
; CHECK: L50:
|
|
; CHECK-NEXT: store i8 undef, i8* null
|
|
; CHECK-NEXT: ret void
|
|
;
|
|
top:
|
|
%.promoted = load double, double* undef, align 8
|
|
br label %if
|
|
|
|
;; This is really a multi-valued phi, because the phi is defined by an expression of the phi.
|
|
;; This means that we can't propagate the value over the backedge, because we'll just cycle
|
|
;; through every value.
|
|
|
|
if: ; preds = %if, %top
|
|
%0 = phi double [ %1, %if ], [ %.promoted, %top ]
|
|
%1 = fadd double %0, 1.0
|
|
br i1 false, label %L50, label %if
|
|
|
|
L50: ; preds = %if
|
|
%.lcssa = phi double [ %1, %if ]
|
|
store double %.lcssa, double* undef, align 8
|
|
ret void
|
|
}
|
|
|