diff options
Diffstat (limited to 'llvm/test/Transforms/IndVarSimplify')
3 files changed, 55 insertions, 3 deletions
diff --git a/llvm/test/Transforms/IndVarSimplify/canonicalize-cmp.ll b/llvm/test/Transforms/IndVarSimplify/canonicalize-cmp.ll new file mode 100644 index 00000000000..93dc968af6a --- /dev/null +++ b/llvm/test/Transforms/IndVarSimplify/canonicalize-cmp.ll @@ -0,0 +1,52 @@ +; RUN: opt -S -indvars < %s | FileCheck %s + +; Check that we replace signed comparisons between non-negative values with +; unsigned comparisons if we can. + +target datalayout = "n8:16:32:64" + +define i32 @test_01(i32 %a, i32 %b, i32* %p) { + +; CHECK-LABEL: @test_01( +; CHECK-NOT: icmp slt +; CHECK: %cmp1 = icmp ult i32 %iv, 100 +; CHECK: %cmp2 = icmp ult i32 %iv, 100 +; CHECK-NOT: %cmp3 +; CHECK: %exitcond = icmp ne i32 %iv.next, 1000 + +entry: + br label %loop.entry + +loop.entry: + %iv = phi i32 [ 0, %entry ], [ %iv.next, %loop.be ] + %cmp1 = icmp slt i32 %iv, 100 + br i1 %cmp1, label %b1, label %b2 + +b1: + store i32 %iv, i32* %p + br label %merge + +b2: + store i32 %a, i32* %p + br label %merge + +merge: + %cmp2 = icmp ult i32 %iv, 100 + br i1 %cmp2, label %b3, label %b4 + +b3: + store i32 %iv, i32* %p + br label %loop.be + +b4: + store i32 %b, i32* %p + br label %loop.be + +loop.be: + %iv.next = add i32 %iv, 1 + %cmp3 = icmp slt i32 %iv.next, 1000 + br i1 %cmp3, label %loop.entry, label %exit + +exit: + ret i32 %iv +} diff --git a/llvm/test/Transforms/IndVarSimplify/eliminate-comparison.ll b/llvm/test/Transforms/IndVarSimplify/eliminate-comparison.ll index 612f01e3cad..a63617e62c0 100644 --- a/llvm/test/Transforms/IndVarSimplify/eliminate-comparison.ll +++ b/llvm/test/Transforms/IndVarSimplify/eliminate-comparison.ll @@ -111,7 +111,7 @@ return: ; Indvars should not turn the second loop into an infinite one. ; CHECK-LABEL: @func_11( -; CHECK: %tmp5 = icmp slt i32 %__key6.0, 10 +; CHECK: %tmp5 = icmp ult i32 %__key6.0, 10 ; CHECK-NOT: br i1 true, label %noassert68, label %unrolledend define i32 @func_11() nounwind uwtable { @@ -163,7 +163,7 @@ declare void @llvm.trap() noreturn nounwind ; In this case the second loop only has a single iteration, fold the header away ; CHECK-LABEL: @func_12( -; CHECK: %tmp5 = icmp slt i32 %__key6.0, 10 +; CHECK: %tmp5 = icmp ult i32 %__key6.0, 10 ; CHECK: br i1 true, label %noassert68, label %unrolledend define i32 @func_12() nounwind uwtable { entry: diff --git a/llvm/test/Transforms/IndVarSimplify/widen-loop-comp.ll b/llvm/test/Transforms/IndVarSimplify/widen-loop-comp.ll index b87cd055019..2d24cd732ce 100644 --- a/llvm/test/Transforms/IndVarSimplify/widen-loop-comp.ll +++ b/llvm/test/Transforms/IndVarSimplify/widen-loop-comp.ll @@ -64,7 +64,7 @@ for.end: ; CHECK-LABEL: @test2 ; CHECK: for.body4.us ; CHECK: %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 -; CHECK: %cmp2.us = icmp slt i64 +; CHECK: %cmp2.us = icmp ult i64 ; CHECK-NOT: %2 = trunc i64 %indvars.iv.next to i32 ; CHECK-NOT: %cmp2.us = icmp slt i32 |
