| ; RUN: llc -march=hexagon -O3 < %s | FileCheck %s | |
| ; Test that the MinStart computation, which is based upon the length | |
| ; of the chain edges, is computed correctly. A bug in the code allowed | |
| ; two instuctions that have a chain edge to be scheduled more than II | |
| ; instructions apart. In this test, if two stores appear before the | |
| ; store, then that is a bug. | |
| ; CHECK: r{{[0-9]+}} = memw([[REG0:r([0-9]+)]]+#12) | |
| ; CHECK-NOT: r{{[0-9]+}} = memw([[REG0]]+#12) | |
| ; CHECK: memw([[REG0]]+#12) = r{{[0-9]+}} | |
| %s.0 = type { i64, i32, i32, i32, i8* } | |
| @g0 = external global %s.0, align 8 | |
| ; Function Attrs: nounwind | |
| define void @f0() #0 { | |
| b0: | |
| %v0 = load i32, i32* getelementptr inbounds (%s.0, %s.0* @g0, i32 0, i32 1), align 8 | |
| %v1 = ashr i32 %v0, 3 | |
| br i1 undef, label %b1, label %b2 | |
| b1: ; preds = %b1, %b0 | |
| %v2 = phi i32 [ %v5, %b1 ], [ 0, %b0 ] | |
| %v3 = load i8*, i8** getelementptr inbounds (%s.0, %s.0* @g0, i32 0, i32 4), align 4 | |
| %v4 = getelementptr inbounds i8, i8* %v3, i32 -1 | |
| store i8* %v4, i8** getelementptr inbounds (%s.0, %s.0* @g0, i32 0, i32 4), align 4 | |
| store i8 0, i8* %v4, align 1 | |
| %v5 = add nsw i32 %v2, 1 | |
| %v6 = icmp eq i32 %v5, %v1 | |
| br i1 %v6, label %b2, label %b1 | |
| b2: ; preds = %b1, %b0 | |
| ret void | |
| } | |
| attributes #0 = { nounwind "target-cpu"="hexagonv60" } |