CodeGen peephole: fold redundant phys reg copies

[oota-llvm.git] / test / CodeGen / X86 / fp-stack-O0-crash.ll

diff --git a/test/CodeGen/X86/fp-stack-O0-crash.ll b/test/CodeGen/X86/fp-stack-O0-crash.ll
index 4768ea2019d17615bbc7fd83568c65268f57a1e5..5acfd5d3b6186b3096ed7ce4995ba483c6e99ca6 100644 (file)
--- a/test/CodeGen/X86/fp-stack-O0-crash.ll
+++ b/test/CodeGen/X86/fp-stack-O0-crash.ll
@@ -1,4 +1,4 @@
-; RUN: llc %s -O0 -fast-isel -regalloc=local -o -
+; RUN: llc %s -O0 -fast-isel -regalloc=fast -mcpu=i386 -o -
 ; PR4767
 
 target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
@@ -11,14 +11,14 @@ entry:
   br i1 false, label %cond.true, label %cond.false
 
 cond.true:                                        ; preds = %entry
-  %tmp = load x86_fp80* %x.addr                   ; <x86_fp80> [#uses=1]
-  %tmp1 = load x86_fp80* %x.addr                  ; <x86_fp80> [#uses=1]
+  %tmp = load x86_fp80, x86_fp80* %x.addr                   ; <x86_fp80> [#uses=1]
+  %tmp1 = load x86_fp80, x86_fp80* %x.addr                  ; <x86_fp80> [#uses=1]
   %cmp = fcmp oeq x86_fp80 %tmp, %tmp1            ; <i1> [#uses=1]
   br i1 %cmp, label %if.then, label %if.end
 
 cond.false:                                       ; preds = %entry
-  %tmp2 = load x86_fp80* %x.addr                  ; <x86_fp80> [#uses=1]
-  %tmp3 = load x86_fp80* %x.addr                  ; <x86_fp80> [#uses=1]
+  %tmp2 = load x86_fp80, x86_fp80* %x.addr                  ; <x86_fp80> [#uses=1]
+  %tmp3 = load x86_fp80, x86_fp80* %x.addr                  ; <x86_fp80> [#uses=1]
   %cmp4 = fcmp une x86_fp80 %tmp2, %tmp3          ; <i1> [#uses=1]
   br i1 %cmp4, label %if.then, label %if.end
 
@@ -28,3 +28,22 @@ if.then:                                          ; preds = %cond.false, %cond.t
 if.end:                                           ; preds = %if.then, %cond.false, %cond.true
   ret void
 }
+
+; PR10575
+; This produces a FP0 = IMPLICIT_DEF instruction.
+define void @__m_rankmerge_MOD_dindexmerge_() nounwind {
+entry:
+  br label %"20"
+
+"20":                                             ; preds = %"23", %entry
+    %0 = phi double [ undef, %entry ], [ %0, %"23" ]
+    %1 = phi double [ 0.000000e+00, %entry ], [ %2, %"23" ]
+    br i1 undef, label %"21", label %"23"
+
+"21":                                             ; preds = %"20"
+    ret void
+
+"23":                                             ; preds = %"20"
+    %2 = select i1 undef, double %0, double %1
+    br label %"20"
+}