diff options
| author | Sumanth Gundapaneni <sgundapa@codeaurora.org> | 2017-07-28 22:25:40 +0000 |
|---|---|---|
| committer | Sumanth Gundapaneni <sgundapa@codeaurora.org> | 2017-07-28 22:25:40 +0000 |
| commit | 8d50a50e986a76aa433aabd4fc22bc72c327f5b0 (patch) | |
| tree | d5f1c66cbf5448a5f5e0262a789db06e5fa29fd2 /llvm/test/Transforms/SimplifyCFG/Hexagon | |
| parent | f14996b962c4750ceaf675eefbc6cc1902b925ff (diff) | |
| download | bcm5719-llvm-8d50a50e986a76aa433aabd4fc22bc72c327f5b0.tar.gz bcm5719-llvm-8d50a50e986a76aa433aabd4fc22bc72c327f5b0.zip | |
[SimplifyCFG] Make the no-jump-tables attribute also disable switch lookup tables
Differential Revision: https://reviews.llvm.org/D35579
llvm-svn: 309444
Diffstat (limited to 'llvm/test/Transforms/SimplifyCFG/Hexagon')
| -rw-r--r-- | llvm/test/Transforms/SimplifyCFG/Hexagon/disable-lookup-table.ll | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/llvm/test/Transforms/SimplifyCFG/Hexagon/disable-lookup-table.ll b/llvm/test/Transforms/SimplifyCFG/Hexagon/disable-lookup-table.ll new file mode 100644 index 00000000000..a10c67019f0 --- /dev/null +++ b/llvm/test/Transforms/SimplifyCFG/Hexagon/disable-lookup-table.ll @@ -0,0 +1,36 @@ +; RUN: opt -S -O2 < %s | FileCheck %s -check-prefix=DISABLE +; RUN: opt -S -hexagon-emit-lookup-tables=true -O2 < %s | FileCheck %s -check-prefix=DISABLE +; RUN: opt -S -hexagon-emit-lookup-tables=false -O2 < %s | FileCheck %s -check-prefix=DISABLE +; The attribute "no-jump-tables"="true" disables the generation of switch generated lookup tables + +; DISABLE-NOT: @{{.*}} = private unnamed_addr constant [6 x i32] [i32 9, i32 20, i32 14, i32 22, i32 12, i32 5] + +target datalayout = "e-m:e-p:32:32:32-a:0-n16:32-i64:64:64-i32:32:32-i16:16:16-i1:8:8-f32:32:32-f64:64:64-v32:32:32-v64:64:64-v512:512:512-v1024:1024:1024-v2048:2048:2048" +target triple = "hexagon-unknown--elf" + +; Function Attrs: noinline nounwind +define i32 @foo(i32 %c) #0 { +entry: + switch i32 %c, label %sw.default [ + i32 42, label %return + i32 43, label %sw.bb1 + i32 44, label %sw.bb2 + i32 45, label %sw.bb3 + i32 46, label %sw.bb4 + i32 47, label %sw.bb5 + i32 48, label %sw.bb6 + ] + +sw.bb1: br label %return +sw.bb2: br label %return +sw.bb3: br label %return +sw.bb4: br label %return +sw.bb5: br label %return +sw.bb6: br label %return +sw.default: br label %return +return: + %retval.0 = phi i32 [ 15, %sw.default ], [ 1, %sw.bb6 ], [ 62, %sw.bb5 ], [ 27, %sw.bb4 ], [ -1, %sw.bb3 ], [ 0, %sw.bb2 ], [ 123, %sw.bb1 ], [ 55, %entry ] + ret i32 %retval.0 +} + +attributes #0 = { noinline nounwind "no-jump-tables"="true"} |
