| Jakob Stoklund Olesen | 0077114 | 2010-09-01 22:15:35 +0000 | [diff] [blame^] | 1 | ; RUN: llc < %s -verify-machineinstrs | FileCheck %s |
| 2 | 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" |
| 3 | target triple = "x86_64-apple-darwin10.0.0" |
| 4 | |
| 5 | ; This test exercises the alias checking in SimpleRegisterCoalescing::RemoveCopyByCommutingDef. |
| 6 | |
| 7 | define void @f(i32* %w, i32* %h, i8* %_this, i8* %image) nounwind ssp { |
| 8 | %x1 = tail call i64 @g(i8* %_this, i8* %image) nounwind ; <i64> [#uses=3] |
| 9 | %tmp1 = trunc i64 %x1 to i32 ; <i32> [#uses=1] |
| 10 | ; CHECK: movl (%r{{.*}}), % |
| 11 | %x4 = load i32* %h, align 4 ; <i32> [#uses=1] |
| 12 | |
| 13 | ; The imull clobbers a 32-bit register. |
| 14 | ; CHECK: imull %{{...}}, %e[[CLOBBER:..]] |
| 15 | %x5 = mul nsw i32 %x4, %tmp1 ; <i32> [#uses=1] |
| 16 | |
| 17 | ; So we cannot use the corresponding 64-bit register anymore. |
| 18 | ; CHECK-NOT: shrq $32, %r[[CLOBBER]] |
| 19 | %btmp3 = lshr i64 %x1, 32 ; <i64> [#uses=1] |
| 20 | %btmp4 = trunc i64 %btmp3 to i32 ; <i32> [#uses=1] |
| 21 | |
| 22 | ; CHECK: idiv |
| 23 | %x6 = sdiv i32 %x5, %btmp4 ; <i32> [#uses=1] |
| 24 | store i32 %x6, i32* %w, align 4 |
| 25 | ret void |
| 26 | } |
| 27 | |
| 28 | declare i64 @g(i8*, i8*) |