; RUN: llc < %s -march=x86-64 -mcpu=core2 -pre-RA-sched=source -enable-misched \ ; RUN: -misched-topdown -verify-machineinstrs \ ; RUN: | FileCheck %s -check-prefix=TOPDOWN ; RUN: llc < %s -march=x86-64 -mcpu=core2 -pre-RA-sched=source -enable-misched \ ; RUN: -misched=ilpmin -verify-machineinstrs \ ; RUN: | FileCheck %s -check-prefix=ILPMIN ; RUN: llc < %s -march=x86-64 -mcpu=core2 -pre-RA-sched=source -enable-misched \ ; RUN: -misched=ilpmax -verify-machineinstrs \ ; RUN: | FileCheck %s -check-prefix=ILPMAX ; ; Verify that the MI scheduler minimizes register pressure for a ; uniform set of bottom-up subtrees (unrolled matrix multiply). ; ; For current top-down heuristics, ensure that some folded imulls have ; been reordered with the stores. This tests the scheduler's cheap ; alias analysis ability (that doesn't require any AliasAnalysis pass). ; ; TOPDOWN-LABEL: %for.body ; TOPDOWN: movl %{{.*}}, ( ; TOPDOWN: imull {{[0-9]*}}( ; TOPDOWN: movl %{{.*}}, 4( ; TOPDOWN: imull {{[0-9]*}}( ; TOPDOWN: movl %{{.*}}, 8( ; TOPDOWN: movl %{{.*}}, 12( ; TOPDOWN-LABEL: %for.end ; ; For -misched=ilpmin, verify that each expression subtree is ; scheduled independently, and that the imull/adds are interleaved. ; ; ILPMIN-LABEL: %for.body ; ILPMIN: movl %{{.*}}, ( ; ILPMIN: imull ; ILPMIN: imull ; ILPMIN: addl ; ILPMIN: imull ; ILPMIN: addl ; ILPMIN: imull ; ILPMIN: addl ; ILPMIN: movl %{{.*}}, 4( ; ILPMIN: imull ; ILPMIN: imull ; ILPMIN: addl ; ILPMIN: imull ; ILPMIN: addl ; ILPMIN: imull ; ILPMIN: addl ; ILPMIN: movl %{{.*}}, 8( ; ILPMIN: imull ; ILPMIN: imull ; ILPMIN: addl ; ILPMIN: imull ; ILPMIN: addl ; ILPMIN: imull ; ILPMIN: addl ; ILPMIN: movl %{{.*}}, 12( ; ILPMIN-LABEL: %for.end ; ; For -misched=ilpmax, verify that each expression subtree is ; scheduled independently, and that the imull/adds are clustered. ; ; ILPMAX-LABEL: %for.body ; ILPMAX: movl %{{.*}}, ( ; ILPMAX: imull ; ILPMAX: imull ; ILPMAX: imull ; ILPMAX: imull ; ILPMAX: addl ; ILPMAX: addl ; ILPMAX: addl ; ILPMAX: movl %{{.*}}, 4( ; ILPMAX: imull ; ILPMAX: imull ; ILPMAX: imull ; ILPMAX: imull ; ILPMAX: addl ; ILPMAX: addl ; ILPMAX: addl ; ILPMAX: movl %{{.*}}, 8( ; ILPMAX: imull ; ILPMAX: imull ; ILPMAX: imull ; ILPMAX: imull ; ILPMAX: addl ; ILPMAX: addl ; ILPMAX: addl ; ILPMAX: movl %{{.*}}, 12( ; ILPMAX-LABEL: %for.end define void @mmult([4 x i32]* noalias nocapture %m1, [4 x i32]* noalias nocapture %m2, [4 x i32]* noalias nocapture %m3) nounwind uwtable ssp { entry: br label %for.body for.body: ; preds = %for.body, %entry %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ] %arrayidx8 = getelementptr inbounds [4 x i32], [4 x i32]* %m1, i64 %indvars.iv, i64 0 %tmp = load i32, i32* %arrayidx8, align 4 %arrayidx12 = getelementptr inbounds [4 x i32], [4 x i32]* %m2, i64 0, i64 0 %tmp1 = load i32, i32* %arrayidx12, align 4 %arrayidx8.1 = getelementptr inbounds [4 x i32], [4 x i32]* %m1, i64 %indvars.iv, i64 1 %tmp2 = load i32, i32* %arrayidx8.1, align 4 %arrayidx12.1 = getelementptr inbounds [4 x i32], [4 x i32]* %m2, i64 1, i64 0 %tmp3 = load i32, i32* %arrayidx12.1, align 4 %arrayidx8.2 = getelementptr inbounds [4 x i32], [4 x i32]* %m1, i64 %indvars.iv, i64 2 %tmp4 = load i32, i32* %arrayidx8.2, align 4 %arrayidx12.2 = getelementptr inbounds [4 x i32], [4 x i32]* %m2, i64 2, i64 0 %tmp5 = load i32, i32* %arrayidx12.2, align 4 %arrayidx8.3 = getelementptr inbounds [4 x i32], [4 x i32]* %m1, i64 %indvars.iv, i64 3 %tmp6 = load i32, i32* %arrayidx8.3, align 4 %arrayidx12.3 = getelementptr inbounds [4 x i32], [4 x i32]* %m2, i64 3, i64 0 %tmp8 = load i32, i32* %arrayidx8, align 4 %arrayidx12.137 = getelementptr inbounds [4 x i32], [4 x i32]* %m2, i64 0, i64 1 %tmp9 = load i32, i32* %arrayidx12.137, align 4 %tmp10 = load i32, i32* %arrayidx8.1, align 4 %arrayidx12.1.1 = getelementptr inbounds [4 x i32], [4 x i32]* %m2, i64 1, i64 1 %tmp11 = load i32, i32* %arrayidx12.1.1, align 4 %tmp12 = load i32, i32* %arrayidx8.2, align 4 %arrayidx12.2.1 = getelementptr inbounds [4 x i32], [4 x i32]* %m2, i64 2, i64 1 %tmp13 = load i32, i32* %arrayidx12.2.1, align 4 %tmp14 = load i32, i32* %arrayidx8.3, align 4 %arrayidx12.3.1 = getelementptr inbounds [4 x i32], [4 x i32]* %m2, i64 3, i64 1 %tmp15 = load i32, i32* %arrayidx12.3.1, align 4 %tmp16 = load i32, i32* %arrayidx8, align 4 %arrayidx12.239 = getelementptr inbounds [4 x i32], [4 x i32]* %m2, i64 0, i64 2 %tmp17 = load i32, i32* %arrayidx12.239, align 4 %tmp18 = load i32, i32* %arrayidx8.1, align 4 %arrayidx12.1.2 = getelementptr inbounds [4 x i32], [4 x i32]* %m2, i64 1, i64 2 %tmp19 = load i32, i32* %arrayidx12.1.2, align 4 %tmp20 = load i32, i32* %arrayidx8.2, align 4 %arrayidx12.2.2 = getelementptr inbounds [4 x i32], [4 x i32]* %m2, i64 2, i64 2 %tmp21 = load i32, i32* %arrayidx12.2.2, align 4 %tmp22 = load i32, i32* %arrayidx8.3, align 4 %arrayidx12.3.2 = getelementptr inbounds [4 x i32], [4 x i32]* %m2, i64 3, i64 2 %tmp23 = load i32, i32* %arrayidx12.3.2, align 4 %tmp24 = load i32, i32* %arrayidx8, align 4 %arrayidx12.341 = getelementptr inbounds [4 x i32], [4 x i32]* %m2, i64 0, i64 3 %tmp25 = load i32, i32* %arrayidx12.341, align 4 %tmp26 = load i32, i32* %arrayidx8.1, align 4 %arrayidx12.1.3 = getelementptr inbounds [4 x i32], [4 x i32]* %m2, i64 1, i64 3 %tmp27 = load i32, i32* %arrayidx12.1.3, align 4 %tmp28 = load i32, i32* %arrayidx8.2, align 4 %arrayidx12.2.3 = getelementptr inbounds [4 x i32], [4 x i32]* %m2, i64 2, i64 3 %tmp29 = load i32, i32* %arrayidx12.2.3, align 4 %tmp30 = load i32, i32* %arrayidx8.3, align 4 %arrayidx12.3.3 = getelementptr inbounds [4 x i32], [4 x i32]* %m2, i64 3, i64 3 %tmp31 = load i32, i32* %arrayidx12.3.3, align 4 %tmp7 = load i32, i32* %arrayidx12.3, align 4 %mul = mul nsw i32 %tmp1, %tmp %mul.1 = mul nsw i32 %tmp3, %tmp2 %mul.2 = mul nsw i32 %tmp5, %tmp4 %mul.3 = mul nsw i32 %tmp7, %tmp6 %mul.138 = mul nsw i32 %tmp9, %tmp8 %mul.1.1 = mul nsw i32 %tmp11, %tmp10 %mul.2.1 = mul nsw i32 %tmp13, %tmp12 %mul.3.1 = mul nsw i32 %tmp15, %tmp14 %mul.240 = mul nsw i32 %tmp17, %tmp16 %mul.1.2 = mul nsw i32 %tmp19, %tmp18 %mul.2.2 = mul nsw i32 %tmp21, %tmp20 %mul.3.2 = mul nsw i32 %tmp23, %tmp22 %mul.342 = mul nsw i32 %tmp25, %tmp24 %mul.1.3 = mul nsw i32 %tmp27, %tmp26 %mul.2.3 = mul nsw i32 %tmp29, %tmp28 %mul.3.3 = mul nsw i32 %tmp31, %tmp30 %add.1 = add nsw i32 %mul.1, %mul %add.2 = add nsw i32 %mul.2, %add.1 %add.3 = add nsw i32 %mul.3, %add.2 %add.1.1 = add nsw i32 %mul.1.1, %mul.138 %add.2.1 = add nsw i32 %mul.2.1, %add.1.1 %add.3.1 = add nsw i32 %mul.3.1, %add.2.1 %add.1.2 = add nsw i32 %mul.1.2, %mul.240 %add.2.2 = add nsw i32 %mul.2.2, %add.1.2 %add.3.2 = add nsw i32 %mul.3.2, %add.2.2 %add.1.3 = add nsw i32 %mul.1.3, %mul.342 %add.2.3 = add nsw i32 %mul.2.3, %add.1.3 %add.3.3 = add nsw i32 %mul.3.3, %add.2.3 %arrayidx16 = getelementptr inbounds [4 x i32], [4 x i32]* %m3, i64 %indvars.iv, i64 0 store i32 %add.3, i32* %arrayidx16, align 4 %arrayidx16.1 = getelementptr inbounds [4 x i32], [4 x i32]* %m3, i64 %indvars.iv, i64 1 store i32 %add.3.1, i32* %arrayidx16.1, align 4 %arrayidx16.2 = getelementptr inbounds [4 x i32], [4 x i32]* %m3, i64 %indvars.iv, i64 2 store i32 %add.3.2, i32* %arrayidx16.2, align 4 %arrayidx16.3 = getelementptr inbounds [4 x i32], [4 x i32]* %m3, i64 %indvars.iv, i64 3 store i32 %add.3.3, i32* %arrayidx16.3, align 4 %indvars.iv.next = add i64 %indvars.iv, 1 %lftr.wideiv = trunc i64 %indvars.iv.next to i32 %exitcond = icmp eq i32 %lftr.wideiv, 4 br i1 %exitcond, label %for.end, label %for.body for.end: ; preds = %for.body ret void }