| ; RUN: llc < %s -mcpu=generic | FileCheck %s |
| ; PR6941 |
| 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" |
| |
| define i32 @snd_xbytes(i32 %v, i32 %from, i32 %to) nounwind readnone ssp { |
| entry: |
| %cmp19 = icmp eq i32 %to, 0 ; <i1> [#uses=1] |
| br i1 %cmp19, label %while.end, label %while.cond |
| |
| while.cond: ; preds = %entry, %while.cond |
| %y.021 = phi i32 [ %rem, %while.cond ], [ %to, %entry ] ; <i32> [#uses=3] |
| %x.020 = phi i32 [ %y.021, %while.cond ], [ %from, %entry ] ; <i32> [#uses=1] |
| %rem = urem i32 %x.020, %y.021 ; <i32> [#uses=2] |
| %cmp = icmp eq i32 %rem, 0 ; <i1> [#uses=1] |
| br i1 %cmp, label %while.end, label %while.cond |
| |
| while.end: ; preds = %while.cond, %entry |
| %x.0.lcssa = phi i32 [ %from, %entry ], [ %y.021, %while.cond ] ; <i32> [#uses=2] |
| %div = udiv i32 %from, %x.0.lcssa ; <i32> [#uses=1] |
| %div11 = udiv i32 %to, %x.0.lcssa ; <i32> [#uses=1] |
| %conv = zext i32 %v to i64 ; <i64> [#uses=1] |
| %conv14 = zext i32 %div11 to i64 ; <i64> [#uses=1] |
| ; Verify that we don't clobber %eax after putting the imulq result in %rax |
| ; CHECK: imulq %r{{.}}x, %r[[RES:..]] |
| ; CHECK-NOT: movl {{.*}}, %e[[RES]] |
| ; CHECK: div |
| %mul = mul i64 %conv14, %conv ; <i64> [#uses=1] |
| %conv16 = zext i32 %div to i64 ; <i64> [#uses=1] |
| %div17 = udiv i64 %mul, %conv16 ; <i64> [#uses=1] |
| %conv18 = trunc i64 %div17 to i32 ; <i32> [#uses=1] |
| ret i32 %conv18 |
| } |
