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Diffstat (limited to 'test/CodeGen/PowerPC/zext-bitperm.ll')
| -rw-r--r-- | test/CodeGen/PowerPC/zext-bitperm.ll | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/test/CodeGen/PowerPC/zext-bitperm.ll b/test/CodeGen/PowerPC/zext-bitperm.ll new file mode 100644 index 00000000000..b6d751d6f2f --- /dev/null +++ b/test/CodeGen/PowerPC/zext-bitperm.ll @@ -0,0 +1,23 @@ +; RUN: llc -verify-machineinstrs < %s -mtriple=powerpc-unknown-linux-gnu | FileCheck %s +; RUN: llc -verify-machineinstrs < %s -mtriple=powerpc64-unknown-linux-gnu | FileCheck %s +; RUN: llc -verify-machineinstrs < %s -mtriple=powerpc64le-unknown-linux-gnu | FileCheck %s + +; Test case for PPCTargetLowering::extendSubTreeForBitPermutation. +; We expect mask and rotate are folded into a rlwinm instruction. + +define zeroext i32 @func(i32* %p, i32 zeroext %i) { +; CHECK-LABEL: @func +; CHECK: addi [[REG1:[0-9]+]], 4, 1 +; CHECK: rlwinm [[REG2:[0-9]+]], [[REG1]], 2, 22, 29 +; CHECK-NOT: sldi +; CHECK: lwzx 3, 3, [[REG2]] +; CHECK: blr +entry: + %add = add i32 %i, 1 + %and = and i32 %add, 255 + %idxprom = zext i32 %and to i64 + %arrayidx = getelementptr inbounds i32, i32* %p, i64 %idxprom + %0 = load i32, i32* %arrayidx, align 4 + ret i32 %0 +} + |