diff options
Diffstat (limited to 'test')
| -rw-r--r-- | test/Transforms/SROA/phi-and-select.ll | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/test/Transforms/SROA/phi-and-select.ll b/test/Transforms/SROA/phi-and-select.ll index 9f2b191..8d82964 100644 --- a/test/Transforms/SROA/phi-and-select.ll +++ b/test/Transforms/SROA/phi-and-select.ll @@ -346,6 +346,43 @@ exit: ret i32 %load } +define i32 @test14(i1 %b1, i1 %b2, i32* %ptr) { +; Check for problems when there are both selects and phis and one is +; speculatable toward promotion but the other is not. That should block all of +; the speculation. +; CHECK-LABEL: @test14( +; CHECK: alloca +; CHECK: alloca +; CHECK: select +; CHECK: phi +; CHECK: phi +; CHECK: select +; CHECK: ret i32 + +entry: + %f = alloca i32 + %g = alloca i32 + store i32 0, i32* %f + store i32 0, i32* %g + %f.select = select i1 %b1, i32* %f, i32* %ptr + br i1 %b2, label %then, label %else + +then: + br label %exit + +else: + br label %exit + +exit: + %f.phi = phi i32* [ %f, %then ], [ %f.select, %else ] + %g.phi = phi i32* [ %g, %then ], [ %ptr, %else ] + %f.loaded = load i32* %f.phi + %g.select = select i1 %b1, i32* %g, i32* %g.phi + %g.loaded = load i32* %g.select + %result = add i32 %f.loaded, %g.loaded + ret i32 %result +} + define i32 @PR13905() { ; Check a pattern where we have a chain of dead phi nodes to ensure they are ; deleted and promotion can proceed. |