diff options
Diffstat (limited to 'test/CodeGen/SystemZ/atomicrmw-add-02.ll')
| -rw-r--r-- | test/CodeGen/SystemZ/atomicrmw-add-02.ll | 132 |
1 files changed, 132 insertions, 0 deletions
diff --git a/test/CodeGen/SystemZ/atomicrmw-add-02.ll b/test/CodeGen/SystemZ/atomicrmw-add-02.ll new file mode 100644 index 000000000000..3dd482dd323d --- /dev/null +++ b/test/CodeGen/SystemZ/atomicrmw-add-02.ll @@ -0,0 +1,132 @@ +; Test 16-bit atomic additions. +; +; 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 addition of a variable. +; - 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. This shift is 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: [[LABEL:\.[^:]*]]: +; CHECK: rll [[ROT:%r[0-9]+]], [[OLD]], 0([[SHIFT]]) +; CHECK: ar [[ROT]], %r3 +; CHECK: rll [[NEW:%r[0-9]+]], [[ROT]], 0({{%r[1-9]+}}) +; CHECK: cs [[OLD]], [[NEW]], 0(%r2) +; CHECK: j{{g?}}lh [[LABEL]] +; CHECK: rll %r2, [[OLD]], 16([[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, 16 +; CHECK-SHIFT2: rll +; CHECK-SHIFT2: ar {{%r[0-9]+}}, %r3 +; CHECK-SHIFT2: rll +; CHECK-SHIFT2: rll +; CHECK-SHIFT2: br %r14 + %res = atomicrmw add i16 *%src, i16 %b seq_cst + ret i16 %res +} + +; Check the minimum signed value. We add 0x80000000 to the rotated word. +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: [[LABEL:\.[^:]*]]: +; CHECK: rll [[ROT:%r[0-9]+]], [[OLD]], 0([[SHIFT]]) +; CHECK: afi [[ROT]], -2147483648 +; CHECK: rll [[NEW:%r[0-9]+]], [[ROT]], 0([[NEGSHIFT:%r[1-9]+]]) +; CHECK: cs [[OLD]], [[NEW]], 0(%r2) +; CHECK: j{{g?}}lh [[LABEL]] +; CHECK: rll %r2, [[OLD]], 16([[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: br %r14 + %res = atomicrmw add i16 *%src, i16 -32768 seq_cst + ret i16 %res +} + +; Check addition of -1. We add 0xffff0000 to the rotated word. +define i16 @f3(i16 *%src) { +; CHECK: f3: +; CHECK: afi [[ROT]], -65536 +; CHECK: br %r14 +; +; CHECK-SHIFT1: f3: +; CHECK-SHIFT1: br %r14 +; CHECK-SHIFT2: f3: +; CHECK-SHIFT2: br %r14 + %res = atomicrmw add i16 *%src, i16 -1 seq_cst + ret i16 %res +} + +; Check addition of 1. We add 0x00010000 to the rotated word. +define i16 @f4(i16 *%src) { +; CHECK: f4: +; CHECK: afi [[ROT]], 65536 +; CHECK: br %r14 +; +; CHECK-SHIFT1: f4: +; CHECK-SHIFT1: br %r14 +; CHECK-SHIFT2: f4: +; CHECK-SHIFT2: br %r14 + %res = atomicrmw add i16 *%src, i16 1 seq_cst + ret i16 %res +} + +; Check the maximum signed value. We add 0x7fff0000 to the rotated word. +define i16 @f5(i16 *%src) { +; CHECK: f5: +; CHECK: afi [[ROT]], 2147418112 +; CHECK: br %r14 +; +; CHECK-SHIFT1: f5: +; CHECK-SHIFT1: br %r14 +; CHECK-SHIFT2: f5: +; CHECK-SHIFT2: br %r14 + %res = atomicrmw add i16 *%src, i16 32767 seq_cst + ret i16 %res +} + +; Check addition of a large unsigned value. We add 0xfffe0000 to the +; rotated word, expressed as a negative AFI operand. +define i16 @f6(i16 *%src) { +; CHECK: f6: +; CHECK: afi [[ROT]], -131072 +; CHECK: br %r14 +; +; CHECK-SHIFT1: f6: +; CHECK-SHIFT1: br %r14 +; CHECK-SHIFT2: f6: +; CHECK-SHIFT2: br %r14 + %res = atomicrmw add i16 *%src, i16 65534 seq_cst + ret i16 %res +} |