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| author | Juergen Ributzka <juergen@apple.com> | 2014-11-18 21:20:17 +0000 |
|---|---|---|
| committer | Juergen Ributzka <juergen@apple.com> | 2014-11-18 21:20:17 +0000 |
| commit | cdda93084304417d64f1eafe9d0dddfff88bb65c (patch) | |
| tree | e2b305ce621928e172398930225cf9819a1df84b /llvm/test/CodeGen/AArch64/fast-isel-shift.ll | |
| parent | 162c1010bd600b1fd53f5e9f045be611d35e83a1 (diff) | |
| download | bcm5719-llvm-cdda93084304417d64f1eafe9d0dddfff88bb65c.tar.gz bcm5719-llvm-cdda93084304417d64f1eafe9d0dddfff88bb65c.zip | |
[FastISel][AArch64] Follow-up fix for "Fix shift-immediate emission for "zero" shifts."
Shifts also perform sign-/zero-extends to larger types, which requires us to emit
an integer extend instead of a simple COPY.
Related to PR21594.
llvm-svn: 222257
Diffstat (limited to 'llvm/test/CodeGen/AArch64/fast-isel-shift.ll')
| -rw-r--r-- | llvm/test/CodeGen/AArch64/fast-isel-shift.ll | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/AArch64/fast-isel-shift.ll b/llvm/test/CodeGen/AArch64/fast-isel-shift.ll index fd3ee27a4b6..bd32077b64a 100644 --- a/llvm/test/CodeGen/AArch64/fast-isel-shift.ll +++ b/llvm/test/CodeGen/AArch64/fast-isel-shift.ll @@ -427,3 +427,27 @@ define i32 @ashr_zero(i32 %a) { ret i32 %1 } +; CHECK-LABEL: shl_zext_zero +; CHECK: ubfx x0, x0, #0, #32 +define i64 @shl_zext_zero(i32 %a) { + %1 = zext i32 %a to i64 + %2 = shl i64 %1, 0 + ret i64 %2 +} + +; CHECK-LABEL: lshr_zext_zero +; CHECK: ubfx x0, x0, #0, #32 +define i64 @lshr_zext_zero(i32 %a) { + %1 = zext i32 %a to i64 + %2 = lshr i64 %1, 0 + ret i64 %2 +} + +; CHECK-LABEL: ashr_zext_zero +; CHECK: ubfx x0, x0, #0, #32 +define i64 @ashr_zext_zero(i32 %a) { + %1 = zext i32 %a to i64 + %2 = ashr i64 %1, 0 + ret i64 %2 +} + |
