diff options
Diffstat (limited to 'test/CodeGen/SystemZ/atomicrmw-minmax-01.ll')
| -rw-r--r-- | test/CodeGen/SystemZ/atomicrmw-minmax-01.ll | 228 |
1 files changed, 228 insertions, 0 deletions
diff --git a/test/CodeGen/SystemZ/atomicrmw-minmax-01.ll b/test/CodeGen/SystemZ/atomicrmw-minmax-01.ll new file mode 100644 index 0000000000000..c6ec77e91b3d3 --- /dev/null +++ b/test/CodeGen/SystemZ/atomicrmw-minmax-01.ll @@ -0,0 +1,228 @@ +; Test 8-bit atomic min/max operations. +; +; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s -check-prefix=CHECK +; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s -check-prefix=CHECK-SHIFT1 +; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s -check-prefix=CHECK-SHIFT2 + +; Check signed minimum. +; - CHECK is for the main loop. +; - CHECK-SHIFT1 makes sure that the negated shift count used by the second +; RLL is set up correctly. The negation is independent of the NILL and L +; tested in CHECK. +; - CHECK-SHIFT2 makes sure that %b is shifted into the high part of the word +; before being used, and that the low bits are set to 1. This sequence is +; independent of the other loop prologue instructions. +define i8 @f1(i8 *%src, i8 %b) { +; CHECK: f1: +; CHECK: sllg [[SHIFT:%r[1-9]+]], %r2, 3 +; CHECK: nill %r2, 65532 +; CHECK: l [[OLD:%r[0-9]+]], 0(%r2) +; CHECK: [[LOOP:\.[^:]*]]: +; CHECK: rll [[ROT:%r[0-9]+]], [[OLD]], 0([[SHIFT]]) +; CHECK: cr [[ROT]], %r3 +; CHECK: j{{g?}}le [[KEEP:\..*]] +; CHECK: risbg [[ROT]], %r3, 32, 39, 0 +; CHECK: [[KEEP]]: +; CHECK: rll [[NEW:%r[0-9]+]], [[ROT]], 0({{%r[1-9]+}}) +; CHECK: cs [[OLD]], [[NEW]], 0(%r2) +; CHECK: j{{g?}}lh [[LOOP]] +; CHECK: rll %r2, [[OLD]], 8([[SHIFT]]) +; CHECK: br %r14 +; +; CHECK-SHIFT1: f1: +; CHECK-SHIFT1: sllg [[SHIFT:%r[1-9]+]], %r2, 3 +; CHECK-SHIFT1: lcr [[NEGSHIFT:%r[1-9]+]], [[SHIFT]] +; CHECK-SHIFT1: rll +; CHECK-SHIFT1: rll {{%r[0-9]+}}, {{%r[0-9]+}}, 0([[NEGSHIFT]]) +; CHECK-SHIFT1: rll +; CHECK-SHIFT1: br %r14 +; +; CHECK-SHIFT2: f1: +; CHECK-SHIFT2: sll %r3, 24 +; CHECK-SHIFT2: rll +; CHECK-SHIFT2: cr {{%r[0-9]+}}, %r3 +; CHECK-SHIFT2: rll +; CHECK-SHIFT2: rll +; CHECK-SHIFT2: br %r14 + %res = atomicrmw min i8 *%src, i8 %b seq_cst + ret i8 %res +} + +; Check signed maximum. +define i8 @f2(i8 *%src, i8 %b) { +; CHECK: f2: +; CHECK: sllg [[SHIFT:%r[1-9]+]], %r2, 3 +; CHECK: nill %r2, 65532 +; CHECK: l [[OLD:%r[0-9]+]], 0(%r2) +; CHECK: [[LOOP:\.[^:]*]]: +; CHECK: rll [[ROT:%r[0-9]+]], [[OLD]], 0([[SHIFT]]) +; CHECK: cr [[ROT]], %r3 +; CHECK: j{{g?}}he [[KEEP:\..*]] +; CHECK: risbg [[ROT]], %r3, 32, 39, 0 +; CHECK: [[KEEP]]: +; CHECK: rll [[NEW:%r[0-9]+]], [[ROT]], 0({{%r[1-9]+}}) +; CHECK: cs [[OLD]], [[NEW]], 0(%r2) +; CHECK: j{{g?}}lh [[LOOP]] +; CHECK: rll %r2, [[OLD]], 8([[SHIFT]]) +; CHECK: br %r14 +; +; CHECK-SHIFT1: f2: +; CHECK-SHIFT1: sllg [[SHIFT:%r[1-9]+]], %r2, 3 +; CHECK-SHIFT1: lcr [[NEGSHIFT:%r[1-9]+]], [[SHIFT]] +; CHECK-SHIFT1: rll +; CHECK-SHIFT1: rll {{%r[0-9]+}}, {{%r[0-9]+}}, 0([[NEGSHIFT]]) +; CHECK-SHIFT1: rll +; CHECK-SHIFT1: br %r14 +; +; CHECK-SHIFT2: f2: +; CHECK-SHIFT2: sll %r3, 24 +; CHECK-SHIFT2: rll +; CHECK-SHIFT2: cr {{%r[0-9]+}}, %r3 +; CHECK-SHIFT2: rll +; CHECK-SHIFT2: rll +; CHECK-SHIFT2: br %r14 + %res = atomicrmw max i8 *%src, i8 %b seq_cst + ret i8 %res +} + +; Check unsigned minimum. +define i8 @f3(i8 *%src, i8 %b) { +; CHECK: f3: +; CHECK: sllg [[SHIFT:%r[1-9]+]], %r2, 3 +; CHECK: nill %r2, 65532 +; CHECK: l [[OLD:%r[0-9]+]], 0(%r2) +; CHECK: [[LOOP:\.[^:]*]]: +; CHECK: rll [[ROT:%r[0-9]+]], [[OLD]], 0([[SHIFT]]) +; CHECK: clr [[ROT]], %r3 +; CHECK: j{{g?}}le [[KEEP:\..*]] +; CHECK: risbg [[ROT]], %r3, 32, 39, 0 +; CHECK: [[KEEP]]: +; CHECK: rll [[NEW:%r[0-9]+]], [[ROT]], 0({{%r[1-9]+}}) +; CHECK: cs [[OLD]], [[NEW]], 0(%r2) +; CHECK: j{{g?}}lh [[LOOP]] +; CHECK: rll %r2, [[OLD]], 8([[SHIFT]]) +; CHECK: br %r14 +; +; CHECK-SHIFT1: f3: +; CHECK-SHIFT1: sllg [[SHIFT:%r[1-9]+]], %r2, 3 +; CHECK-SHIFT1: lcr [[NEGSHIFT:%r[1-9]+]], [[SHIFT]] +; CHECK-SHIFT1: rll +; CHECK-SHIFT1: rll {{%r[0-9]+}}, {{%r[0-9]+}}, 0([[NEGSHIFT]]) +; CHECK-SHIFT1: rll +; CHECK-SHIFT1: br %r14 +; +; CHECK-SHIFT2: f3: +; CHECK-SHIFT2: sll %r3, 24 +; CHECK-SHIFT2: rll +; CHECK-SHIFT2: clr {{%r[0-9]+}}, %r3 +; CHECK-SHIFT2: rll +; CHECK-SHIFT2: rll +; CHECK-SHIFT2: br %r14 + %res = atomicrmw umin i8 *%src, i8 %b seq_cst + ret i8 %res +} + +; Check unsigned maximum. +define i8 @f4(i8 *%src, i8 %b) { +; CHECK: f4: +; CHECK: sllg [[SHIFT:%r[1-9]+]], %r2, 3 +; CHECK: nill %r2, 65532 +; CHECK: l [[OLD:%r[0-9]+]], 0(%r2) +; CHECK: [[LOOP:\.[^:]*]]: +; CHECK: rll [[ROT:%r[0-9]+]], [[OLD]], 0([[SHIFT]]) +; CHECK: clr [[ROT]], %r3 +; CHECK: j{{g?}}he [[KEEP:\..*]] +; CHECK: risbg [[ROT]], %r3, 32, 39, 0 +; CHECK: [[KEEP]]: +; CHECK: rll [[NEW:%r[0-9]+]], [[ROT]], 0({{%r[1-9]+}}) +; CHECK: cs [[OLD]], [[NEW]], 0(%r2) +; CHECK: j{{g?}}lh [[LOOP]] +; CHECK: rll %r2, [[OLD]], 8([[SHIFT]]) +; CHECK: br %r14 +; +; CHECK-SHIFT1: f4: +; CHECK-SHIFT1: sllg [[SHIFT:%r[1-9]+]], %r2, 3 +; CHECK-SHIFT1: lcr [[NEGSHIFT:%r[1-9]+]], [[SHIFT]] +; CHECK-SHIFT1: rll +; CHECK-SHIFT1: rll {{%r[0-9]+}}, {{%r[0-9]+}}, 0([[NEGSHIFT]]) +; CHECK-SHIFT1: rll +; CHECK-SHIFT1: br %r14 +; +; CHECK-SHIFT2: f4: +; CHECK-SHIFT2: sll %r3, 24 +; CHECK-SHIFT2: rll +; CHECK-SHIFT2: clr {{%r[0-9]+}}, %r3 +; CHECK-SHIFT2: rll +; CHECK-SHIFT2: rll +; CHECK-SHIFT2: br %r14 + %res = atomicrmw umax i8 *%src, i8 %b seq_cst + ret i8 %res +} + +; Check the lowest useful signed minimum value. We need to load 0x81000000 +; into the source register. +define i8 @f5(i8 *%src) { +; CHECK: f5: +; CHECK: llilh [[SRC2:%r[0-9]+]], 33024 +; CHECK: cr [[ROT:%r[0-9]+]], [[SRC2]] +; CHECK: risbg [[ROT]], [[SRC2]], 32, 39, 0 +; CHECK: br %r14 +; +; CHECK-SHIFT1: f5: +; CHECK-SHIFT1: br %r14 +; CHECK-SHIFT2: f5: +; CHECK-SHIFT2: br %r14 + %res = atomicrmw min i8 *%src, i8 -127 seq_cst + ret i8 %res +} + +; Check the highest useful signed maximum value. We need to load 0x7e000000 +; into the source register. +define i8 @f6(i8 *%src) { +; CHECK: f6: +; CHECK: llilh [[SRC2:%r[0-9]+]], 32256 +; CHECK: cr [[ROT:%r[0-9]+]], [[SRC2]] +; CHECK: risbg [[ROT]], [[SRC2]], 32, 39, 0 +; CHECK: br %r14 +; +; CHECK-SHIFT1: f6: +; CHECK-SHIFT1: br %r14 +; CHECK-SHIFT2: f6: +; CHECK-SHIFT2: br %r14 + %res = atomicrmw max i8 *%src, i8 126 seq_cst + ret i8 %res +} + +; Check the lowest useful unsigned minimum value. We need to load 0x01000000 +; into the source register. +define i8 @f7(i8 *%src) { +; CHECK: f7: +; CHECK: llilh [[SRC2:%r[0-9]+]], 256 +; CHECK: clr [[ROT:%r[0-9]+]], [[SRC2]] +; CHECK: risbg [[ROT]], [[SRC2]], 32, 39, 0 +; CHECK: br %r14 +; +; CHECK-SHIFT1: f7: +; CHECK-SHIFT1: br %r14 +; CHECK-SHIFT2: f7: +; CHECK-SHIFT2: br %r14 + %res = atomicrmw umin i8 *%src, i8 1 seq_cst + ret i8 %res +} + +; Check the highest useful unsigned maximum value. We need to load 0xfe000000 +; into the source register. +define i8 @f8(i8 *%src) { +; CHECK: f8: +; CHECK: llilh [[SRC2:%r[0-9]+]], 65024 +; CHECK: clr [[ROT:%r[0-9]+]], [[SRC2]] +; CHECK: risbg [[ROT]], [[SRC2]], 32, 39, 0 +; CHECK: br %r14 +; +; CHECK-SHIFT1: f8: +; CHECK-SHIFT1: br %r14 +; CHECK-SHIFT2: f8: +; CHECK-SHIFT2: br %r14 + %res = atomicrmw umax i8 *%src, i8 254 seq_cst + ret i8 %res +} |