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| author | Richard Sandiford <rsandifo@linux.vnet.ibm.com> | 2013-07-11 08:59:12 +0000 |
|---|---|---|
| committer | Richard Sandiford <rsandifo@linux.vnet.ibm.com> | 2013-07-11 08:59:12 +0000 |
| commit | 84f54a3bc9067cf9b48584d3da4e71049c490cac (patch) | |
| tree | 10ea4c3bb4f265144293fc2918b51d04faa0ce48 /llvm/test/CodeGen/SystemZ/atomicrmw-nand-02.ll | |
| parent | c8a53795ab3463d29950f25f6b91860ef43c502b (diff) | |
| download | bcm5719-llvm-84f54a3bc9067cf9b48584d3da4e71049c490cac.tar.gz bcm5719-llvm-84f54a3bc9067cf9b48584d3da4e71049c490cac.zip | |
[SystemZ] Use zeroing form of RISBG for some AND sequences
RISBG can handle some ANDs for which no AND IMMEDIATE exists.
It also acts as a three-operand AND for some cases where an
AND IMMEDIATE could be used instead.
It might be worth adding a pass to replace RISBG with AND IMMEDIATE
in cases where the register operands end up being the same and where
AND IMMEDIATE is smaller.
llvm-svn: 186072
Diffstat (limited to 'llvm/test/CodeGen/SystemZ/atomicrmw-nand-02.ll')
| -rw-r--r-- | llvm/test/CodeGen/SystemZ/atomicrmw-nand-02.ll | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/llvm/test/CodeGen/SystemZ/atomicrmw-nand-02.ll b/llvm/test/CodeGen/SystemZ/atomicrmw-nand-02.ll index 7a37a38ef92..383c2e513ea 100644 --- a/llvm/test/CodeGen/SystemZ/atomicrmw-nand-02.ll +++ b/llvm/test/CodeGen/SystemZ/atomicrmw-nand-02.ll @@ -14,15 +14,15 @@ ; independent of the other loop prologue instructions. define i16 @f1(i16 *%src, i16 %b) { ; CHECK: f1: -; CHECK: sllg [[SHIFT:%r[1-9]+]], %r2, 3 -; CHECK: nill %r2, 65532 -; CHECK: l [[OLD:%r[0-9]+]], 0(%r2) +; CHECK-DAG: sllg [[SHIFT:%r[1-9]+]], %r2, 3 +; CHECK-DAG: risbg [[BASE:%r[1-9]+]], %r2, 0, 189, 0 +; CHECK: l [[OLD:%r[0-9]+]], 0([[BASE]]) ; CHECK: [[LABEL:\.[^:]*]]: ; CHECK: rll [[ROT:%r[0-9]+]], [[OLD]], 0([[SHIFT]]) ; CHECK: nr [[ROT]], %r3 ; CHECK: xilf [[ROT]], 4294901760 ; CHECK: rll [[NEW:%r[0-9]+]], [[ROT]], 0({{%r[1-9]+}}) -; CHECK: cs [[OLD]], [[NEW]], 0(%r2) +; CHECK: cs [[OLD]], [[NEW]], 0([[BASE]]) ; CHECK: jlh [[LABEL]] ; CHECK: rll %r2, [[OLD]], 16([[SHIFT]]) ; CHECK: br %r14 @@ -50,15 +50,15 @@ define i16 @f1(i16 *%src, i16 %b) { ; Check the minimum signed value. We AND the rotated word with 0x8000ffff. define i16 @f2(i16 *%src) { ; CHECK: f2: -; CHECK: sllg [[SHIFT:%r[1-9]+]], %r2, 3 -; CHECK: nill %r2, 65532 -; CHECK: l [[OLD:%r[0-9]+]], 0(%r2) +; CHECK-DAG: sllg [[SHIFT:%r[1-9]+]], %r2, 3 +; CHECK-DAG: risbg [[BASE:%r[1-9]+]], %r2, 0, 189, 0 +; CHECK: l [[OLD:%r[0-9]+]], 0([[BASE]]) ; CHECK: [[LABEL:\.[^:]*]]: ; CHECK: rll [[ROT:%r[0-9]+]], [[OLD]], 0([[SHIFT]]) ; CHECK: nilh [[ROT]], 32768 ; CHECK: xilf [[ROT]], 4294901760 ; CHECK: rll [[NEW:%r[0-9]+]], [[ROT]], 0([[NEGSHIFT:%r[1-9]+]]) -; CHECK: cs [[OLD]], [[NEW]], 0(%r2) +; CHECK: cs [[OLD]], [[NEW]], 0([[BASE]]) ; CHECK: jlh [[LABEL]] ; CHECK: rll %r2, [[OLD]], 16([[SHIFT]]) ; CHECK: br %r14 |
