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1; RUN: llc < %s -verify-machineinstrs | FileCheck %s2target 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"3target triple = "x86_64-apple-darwin10.0.0"4 5; This test exercises the alias checking in SimpleRegisterCoalescing::RemoveCopyByCommutingDef.6 7define void @f(ptr %w, ptr %h, ptr %_this, ptr %image) nounwind ssp {8 %x1 = tail call i64 @g(ptr %_this, ptr %image) nounwind ; <i64> [#uses=3]9 %tmp1 = trunc i64 %x1 to i32 ; <i32> [#uses=1]10; CHECK: movl (%r{{.*}}), %11 %x4 = load i32, ptr %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: idiv23 %x6 = sdiv i32 %x5, %btmp4 ; <i32> [#uses=1]24 store i32 %x6, ptr %w, align 425 ret void26}27 28declare i64 @g(ptr, ptr)29