target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-n32-S64" ; RUN: opt < %s -alignment-from-assumptions -S | FileCheck %s ; RUN: opt < %s -passes=alignment-from-assumptions -S | FileCheck %s define i32 @foo(i32* nocapture %a) nounwind uwtable readonly { entry: %ptrint = ptrtoint i32* %a to i64 %maskedptr = and i64 %ptrint, 31 %maskcond = icmp eq i64 %maskedptr, 0 tail call void @llvm.assume(i1 %maskcond) %0 = load i32, i32* %a, align 4 ret i32 %0 ; CHECK-LABEL: @foo ; CHECK: load i32, i32* {{[^,]+}}, align 32 ; CHECK: ret i32 } define i32 @foo2(i32* nocapture %a) nounwind uwtable readonly { entry: %ptrint = ptrtoint i32* %a to i64 %offsetptr = add i64 %ptrint, 24 %maskedptr = and i64 %offsetptr, 31 %maskcond = icmp eq i64 %maskedptr, 0 tail call void @llvm.assume(i1 %maskcond) %arrayidx = getelementptr inbounds i32, i32* %a, i64 2 %0 = load i32, i32* %arrayidx, align 4 ret i32 %0 ; CHECK-LABEL: @foo2 ; CHECK: load i32, i32* {{[^,]+}}, align 16 ; CHECK: ret i32 } define i32 @foo2a(i32* nocapture %a) nounwind uwtable readonly { entry: %ptrint = ptrtoint i32* %a to i64 %offsetptr = add i64 %ptrint, 28 %maskedptr = and i64 %offsetptr, 31 %maskcond = icmp eq i64 %maskedptr, 0 tail call void @llvm.assume(i1 %maskcond) %arrayidx = getelementptr inbounds i32, i32* %a, i64 -1 %0 = load i32, i32* %arrayidx, align 4 ret i32 %0 ; CHECK-LABEL: @foo2a ; CHECK: load i32, i32* {{[^,]+}}, align 32 ; CHECK: ret i32 } define i32 @goo(i32* nocapture %a) nounwind uwtable readonly { entry: %ptrint = ptrtoint i32* %a to i64 %maskedptr = and i64 %ptrint, 31 %maskcond = icmp eq i64 %maskedptr, 0 tail call void @llvm.assume(i1 %maskcond) %0 = load i32, i32* %a, align 4 ret i32 %0 ; CHECK-LABEL: @goo ; CHECK: load i32, i32* {{[^,]+}}, align 32 ; CHECK: ret i32 } define i32 @hoo(i32* nocapture %a) nounwind uwtable readonly { entry: %ptrint = ptrtoint i32* %a to i64 %maskedptr = and i64 %ptrint, 31 %maskcond = icmp eq i64 %maskedptr, 0 tail call void @llvm.assume(i1 %maskcond) br label %for.body for.body: ; preds = %entry, %for.body %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ] %r.06 = phi i32 [ 0, %entry ], [ %add, %for.body ] %arrayidx = getelementptr inbounds i32, i32* %a, i64 %indvars.iv %0 = load i32, i32* %arrayidx, align 4 %add = add nsw i32 %0, %r.06 %indvars.iv.next = add i64 %indvars.iv, 8 %1 = trunc i64 %indvars.iv.next to i32 %cmp = icmp slt i32 %1, 2048 br i1 %cmp, label %for.body, label %for.end for.end: ; preds = %for.body %add.lcssa = phi i32 [ %add, %for.body ] ret i32 %add.lcssa ; CHECK-LABEL: @hoo ; CHECK: load i32, i32* %arrayidx, align 32 ; CHECK: ret i32 %add.lcssa } define i32 @joo(i32* nocapture %a) nounwind uwtable readonly { entry: %ptrint = ptrtoint i32* %a to i64 %maskedptr = and i64 %ptrint, 31 %maskcond = icmp eq i64 %maskedptr, 0 tail call void @llvm.assume(i1 %maskcond) br label %for.body for.body: ; preds = %entry, %for.body %indvars.iv = phi i64 [ 4, %entry ], [ %indvars.iv.next, %for.body ] %r.06 = phi i32 [ 0, %entry ], [ %add, %for.body ] %arrayidx = getelementptr inbounds i32, i32* %a, i64 %indvars.iv %0 = load i32, i32* %arrayidx, align 4 %add = add nsw i32 %0, %r.06 %indvars.iv.next = add i64 %indvars.iv, 8 %1 = trunc i64 %indvars.iv.next to i32 %cmp = icmp slt i32 %1, 2048 br i1 %cmp, label %for.body, label %for.end for.end: ; preds = %for.body %add.lcssa = phi i32 [ %add, %for.body ] ret i32 %add.lcssa ; CHECK-LABEL: @joo ; CHECK: load i32, i32* %arrayidx, align 16 ; CHECK: ret i32 %add.lcssa } define i32 @koo(i32* nocapture %a) nounwind uwtable readonly { entry: %ptrint = ptrtoint i32* %a to i64 %maskedptr = and i64 %ptrint, 31 %maskcond = icmp eq i64 %maskedptr, 0 tail call void @llvm.assume(i1 %maskcond) br label %for.body for.body: ; preds = %entry, %for.body %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ] %r.06 = phi i32 [ 0, %entry ], [ %add, %for.body ] %arrayidx = getelementptr inbounds i32, i32* %a, i64 %indvars.iv %0 = load i32, i32* %arrayidx, align 4 %add = add nsw i32 %0, %r.06 %indvars.iv.next = add i64 %indvars.iv, 4 %1 = trunc i64 %indvars.iv.next to i32 %cmp = icmp slt i32 %1, 2048 br i1 %cmp, label %for.body, label %for.end for.end: ; preds = %for.body %add.lcssa = phi i32 [ %add, %for.body ] ret i32 %add.lcssa ; CHECK-LABEL: @koo ; CHECK: load i32, i32* %arrayidx, align 16 ; CHECK: ret i32 %add.lcssa } define i32 @koo2(i32* nocapture %a) nounwind uwtable readonly { entry: %ptrint = ptrtoint i32* %a to i64 %maskedptr = and i64 %ptrint, 31 %maskcond = icmp eq i64 %maskedptr, 0 tail call void @llvm.assume(i1 %maskcond) br label %for.body for.body: ; preds = %entry, %for.body %indvars.iv = phi i64 [ -4, %entry ], [ %indvars.iv.next, %for.body ] %r.06 = phi i32 [ 0, %entry ], [ %add, %for.body ] %arrayidx = getelementptr inbounds i32, i32* %a, i64 %indvars.iv %0 = load i32, i32* %arrayidx, align 4 %add = add nsw i32 %0, %r.06 %indvars.iv.next = add i64 %indvars.iv, 4 %1 = trunc i64 %indvars.iv.next to i32 %cmp = icmp slt i32 %1, 2048 br i1 %cmp, label %for.body, label %for.end for.end: ; preds = %for.body %add.lcssa = phi i32 [ %add, %for.body ] ret i32 %add.lcssa ; CHECK-LABEL: @koo2 ; CHECK: load i32, i32* %arrayidx, align 16 ; CHECK: ret i32 %add.lcssa } define i32 @moo(i32* nocapture %a) nounwind uwtable { entry: %ptrint = ptrtoint i32* %a to i64 %maskedptr = and i64 %ptrint, 31 %maskcond = icmp eq i64 %maskedptr, 0 tail call void @llvm.assume(i1 %maskcond) %0 = bitcast i32* %a to i8* tail call void @llvm.memset.p0i8.i64(i8* %0, i8 0, i64 64, i32 4, i1 false) ret i32 undef ; CHECK-LABEL: @moo ; CHECK: @llvm.memset.p0i8.i64(i8* %0, i8 0, i64 64, i32 32, i1 false) ; CHECK: ret i32 undef } define i32 @moo2(i32* nocapture %a, i32* nocapture %b) nounwind uwtable { entry: %ptrint = ptrtoint i32* %a to i64 %maskedptr = and i64 %ptrint, 31 %maskcond = icmp eq i64 %maskedptr, 0 tail call void @llvm.assume(i1 %maskcond) %ptrint1 = ptrtoint i32* %b to i64 %maskedptr3 = and i64 %ptrint1, 127 %maskcond4 = icmp eq i64 %maskedptr3, 0 tail call void @llvm.assume(i1 %maskcond4) %0 = bitcast i32* %a to i8* %1 = bitcast i32* %b to i8* tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %0, i8* %1, i64 64, i32 4, i1 false) ret i32 undef ; CHECK-LABEL: @moo2 ; CHECK: @llvm.memcpy.p0i8.p0i8.i64(i8* %0, i8* %1, i64 64, i32 32, i1 false) ; CHECK: ret i32 undef } declare void @llvm.assume(i1) nounwind declare void @llvm.memset.p0i8.i64(i8* nocapture, i8, i64, i32, i1) nounwind declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture, i64, i32, i1) nounwind