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| author | Jim Grosbach <grosbach@apple.com> | 2010-07-16 23:05:05 +0000 |
|---|---|---|
| committer | Jim Grosbach <grosbach@apple.com> | 2010-07-16 23:05:05 +0000 |
| commit | 469bbdb597f27d6900c95b6d8ae20a45b79ce91b (patch) | |
| tree | 3972372fc21435a8b44745ef8375f13d90c10521 /test/CodeGen/ARM/bfi.ll | |
| parent | 6dd26ba4bab4e3ebb1545e7e2211297f66e61e0b (diff) | |
| download | llvm-469bbdb597f27d6900c95b6d8ae20a45b79ce91b.tar.gz llvm-469bbdb597f27d6900c95b6d8ae20a45b79ce91b.tar.bz2 llvm-469bbdb597f27d6900c95b6d8ae20a45b79ce91b.tar.xz | |
Add basic support to code-gen the ARM/Thumb2 bit-field insert (BFI) instruction
and a combine pattern to use it for setting a bit-field to a constant
value. More to come for non-constant stores.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108570 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen/ARM/bfi.ll')
| -rw-r--r-- | test/CodeGen/ARM/bfi.ll | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/test/CodeGen/ARM/bfi.ll b/test/CodeGen/ARM/bfi.ll new file mode 100644 index 0000000000..48ef43762f --- /dev/null +++ b/test/CodeGen/ARM/bfi.ll @@ -0,0 +1,17 @@ +; RUN: llc -march=arm -mattr=+v6t2 < %s | FileCheck %s + +%struct.F = type { [3 x i8], i8 } + +@X = common global %struct.F zeroinitializer, align 4 ; <%struct.F*> [#uses=1] + +define void @f1([1 x i32] %f.coerce0) nounwind { +entry: +; CHECK: f1 +; CHECK: mov r2, #10 +; CHECK: bfi r1, r2, #22, #4 + %0 = load i32* bitcast (%struct.F* @X to i32*), align 4 ; <i32> [#uses=1] + %1 = and i32 %0, -62914561 ; <i32> [#uses=1] + %2 = or i32 %1, 41943040 ; <i32> [#uses=1] + store i32 %2, i32* bitcast (%struct.F* @X to i32*), align 4 + ret void +} |