diff options
Diffstat (limited to 'test/Transforms/LoadCombine/load-combine-negativegep.ll')
| -rw-r--r-- | test/Transforms/LoadCombine/load-combine-negativegep.ll | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/test/Transforms/LoadCombine/load-combine-negativegep.ll b/test/Transforms/LoadCombine/load-combine-negativegep.ll new file mode 100644 index 0000000000000..7c5700b429548 --- /dev/null +++ b/test/Transforms/LoadCombine/load-combine-negativegep.ll @@ -0,0 +1,19 @@ +; RUN: opt -basicaa -load-combine -S < %s | FileCheck %s +target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" +target triple = "x86_64-unknown-linux-gnu" + +define i32 @Load_NegGep(i32* %i){ + %1 = getelementptr inbounds i32, i32* %i, i64 -1 + %2 = load i32, i32* %1, align 4 + %3 = load i32, i32* %i, align 4 + %4 = add nsw i32 %3, %2 + ret i32 %4 +; CHECK-LABEL: @Load_NegGep( +; CHECK: %[[load:.*]] = load i64 +; CHECK: %[[combine_extract_lo:.*]] = trunc i64 %[[load]] to i32 +; CHECK: %[[combine_extract_shift:.*]] = lshr i64 %[[load]], 32 +; CHECK: %[[combine_extract_hi:.*]] = trunc i64 %[[combine_extract_shift]] to i32 +; CHECK: %[[add:.*]] = add nsw i32 %[[combine_extract_hi]], %[[combine_extract_lo]] +} + + |