CodeGen peephole: fold redundant phys reg copies

[oota-llvm.git] / test / CodeGen / X86 / uint64-to-float.ll

diff --git a/test/CodeGen/X86/uint64-to-float.ll b/test/CodeGen/X86/uint64-to-float.ll
index 3cf5d4dc4922653849a135ec03f296c25b6f513f..a1074a6d69891e1d1c07a6c0fa36d72e67bf7b0a 100644 (file)
--- a/test/CodeGen/X86/uint64-to-float.ll
+++ b/test/CodeGen/X86/uint64-to-float.ll
@@ -1,4 +1,4 @@
-; RUN: llc < %s -march=x86-64 | FileCheck %s
+; RUN: llc < %s -mcpu=generic -march=x86-64 | FileCheck %s
 ; Verify that we are using the efficient uitofp --> sitofp lowering illustrated
 ; by the compiler_rt implementation of __floatundisf.
 ; <rdar://problem/8493982>
@@ -6,39 +6,15 @@
 target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
 target triple = "x86_64-apple-darwin10.0.0"
 
-; FIXME: This test could generate this code:
-;
-; ## BB#0:                                ## %entry
-;      testq   %rdi, %rdi
-;      jns     LBB0_2
-; ## BB#1:
-;      movq    %rdi, %rax
-;      shrq    %rax
-;      andq    $1, %rdi
-;      orq     %rax, %rdi
-;      cvtsi2ssq       %rdi, %xmm0
-;      addss   %xmm0, %xmm0
-;      ret
-; LBB0_2:                                 ## %entry
-;      cvtsi2ssq       %rdi, %xmm0
-;      ret
-;
-; The blocks come from lowering:
-;
-;   %vreg7<def> = CMOV_FR32 %vreg6<kill>, %vreg5<kill>, 15, %EFLAGS<imp-use>; FR32:%vreg7,%vreg6,%vreg5
-;
-; If the instruction had an EFLAGS<kill> flag, it wouldn't need to mark EFLAGS
-; as live-in on the new blocks, and machine sinking would be able to sink
-; everything below the test.
-
+; CHECK: andl
+; CHECK-NEXT: testq %rdi, %rdi
+; CHECK-NEXT: js LBB0_1
+; CHECK: cvtsi2ss
+; CHECK-NEXT: ret
+; CHECK: LBB0_1
 ; CHECK: shrq
-; CHECK: andq
 ; CHECK-NEXT: orq
-; CHECK: testq %rdi, %rdi
-; CHECK-NEXT: jns LBB0_2
-; CHECK: cvtsi2ss
-; CHECK: LBB0_2
-; CHECK: cvtsi2ss
+; CHECK-NEXT: cvtsi2ss
 define float @test(i64 %a) {
 entry:
   %b = uitofp i64 %a to float