| ; RUN: opt < %s -globalopt -S | FileCheck %s |
| target datalayout = "E-p:64:64:64-a0:0:8-f32:32:32-f64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-v64:64:64-v128:128:128" |
| |
| %struct.foo = type { i32, i32 } |
| @X = internal global %struct.foo* null |
| ; CHECK: @X.f0 |
| ; CHECK: @X.f1 |
| |
| define void @bar(i64 %Size) nounwind noinline { |
| entry: |
| %mallocsize = shl i64 %Size, 3 ; <i64> [#uses=1] |
| %malloccall = tail call i8* @malloc(i64 %mallocsize) ; <i8*> [#uses=1] |
| ; CHECK: mul i64 %Size, 4 |
| %.sub = bitcast i8* %malloccall to %struct.foo* ; <%struct.foo*> [#uses=1] |
| store %struct.foo* %.sub, %struct.foo** @X, align 4 |
| ret void |
| } |
| |
| declare noalias i8* @malloc(i64) |
| |
| define i32 @baz() nounwind readonly noinline { |
| bb1.thread: |
| %0 = load %struct.foo*, %struct.foo** @X, align 4 |
| br label %bb1 |
| |
| bb1: ; preds = %bb1, %bb1.thread |
| %i.0.reg2mem.0 = phi i32 [ 0, %bb1.thread ], [ %indvar.next, %bb1 ] |
| %sum.0.reg2mem.0 = phi i32 [ 0, %bb1.thread ], [ %3, %bb1 ] |
| %1 = getelementptr %struct.foo, %struct.foo* %0, i32 %i.0.reg2mem.0, i32 0 |
| %2 = load i32, i32* %1, align 4 |
| %3 = add i32 %2, %sum.0.reg2mem.0 |
| %indvar.next = add i32 %i.0.reg2mem.0, 1 |
| %exitcond = icmp eq i32 %indvar.next, 1200 |
| br i1 %exitcond, label %bb2, label %bb1 |
| |
| bb2: ; preds = %bb1 |
| ret i32 %3 |
| } |
| |
| define void @bam(i64 %Size) nounwind noinline #0 { |
| entry: |
| %0 = load %struct.foo*, %struct.foo** @X, align 4 |
| ret void |
| } |
| |
| attributes #0 = { "null-pointer-is-valid"="true" } |
| |