vendor/llvm/llvm-trunk-r308421

1 files changed, 81 insertions, 0 deletions

diff --git a/test/CodeGen/SystemZ/fp-copysign-02.ll b/test/CodeGen/SystemZ/fp-copysign-02.ll
new file mode 100644
index 0000000000000..657c0e18767b6
--- /dev/null
+++ b/test/CodeGen/SystemZ/fp-copysign-02.ll
@@ -0,0 +1,81 @@
+; Test f128 copysign operations on z14.
+;
+; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z14 | FileCheck %s
+
+declare float @copysignf(float, float) readnone
+declare double @copysign(double, double) readnone
+; FIXME: not really the correct prototype for SystemZ.
+declare fp128 @copysignl(fp128, fp128) readnone
+
+; Test f32 copies in which the sign comes from an f128.
+define float @f1(float %a, fp128 *%bptr) {
+; CHECK-LABEL: f1:
+; CHECK: vl %v[[REG:[0-9]+]], 0(%r2)
+; CHECK: cpsdr %f0, %f[[REG]], %f0
+; CHECK: br %r14
+  %bl = load volatile fp128, fp128 *%bptr
+  %b = fptrunc fp128 %bl to float
+  %res = call float @copysignf(float %a, float %b) readnone
+  ret float %res
+}
+
+; Test f64 copies in which the sign comes from an f128.
+define double @f2(double %a, fp128 *%bptr) {
+; CHECK-LABEL: f2:
+; CHECK: vl %v[[REG:[0-9]+]], 0(%r2)
+; CHECK: cpsdr %f0, %f[[REG]], %f0
+; CHECK: br %r14
+  %bl = load volatile fp128, fp128 *%bptr
+  %b = fptrunc fp128 %bl to double
+  %res = call double @copysign(double %a, double %b) readnone
+  ret double %res
+}
+
+; Test f128 copies in which the sign comes from an f32.
+define void @f7(fp128 *%cptr, fp128 *%aptr, float %bf) {
+; CHECK-LABEL: f7:
+; CHECK: vl [[REG1:%v[0-7]+]], 0(%r3)
+; CHECK: tmlh
+; CHECK: wflnxb [[REG1]], [[REG1]]
+; CHECK: wflpxb [[REG1]], [[REG1]]
+; CHECK: vst [[REG1]], 0(%r2)
+; CHECK: br %r14
+  %a = load volatile fp128, fp128 *%aptr
+  %b = fpext float %bf to fp128
+  %c = call fp128 @copysignl(fp128 %a, fp128 %b) readnone
+  store fp128 %c, fp128 *%cptr
+  ret void
+}
+
+; As above, but the sign comes from an f64.
+define void @f8(fp128 *%cptr, fp128 *%aptr, double %bd) {
+; CHECK-LABEL: f8:
+; CHECK: vl [[REG1:%v[0-7]+]], 0(%r3)
+; CHECK: tmhh
+; CHECK: wflnxb [[REG1]], [[REG1]]
+; CHECK: wflpxb [[REG1]], [[REG1]]
+; CHECK: vst [[REG1]], 0(%r2)
+; CHECK: br %r14
+  %a = load volatile fp128, fp128 *%aptr
+  %b = fpext double %bd to fp128
+  %c = call fp128 @copysignl(fp128 %a, fp128 %b) readnone
+  store fp128 %c, fp128 *%cptr
+  ret void
+}
+
+; As above, but the sign comes from an f128.
+define void @f9(fp128 *%cptr, fp128 *%aptr, fp128 *%bptr) {
+; CHECK-LABEL: f9:
+; CHECK: vl [[REG1:%v[0-7]+]], 0(%r3)
+; CHECK: vl [[REG2:%v[0-7]+]], 0(%r4)
+; CHECK: tm
+; CHECK: wflnxb [[REG1]], [[REG1]]
+; CHECK: wflpxb [[REG1]], [[REG1]]
+; CHECK: vst [[REG1]], 0(%r2)
+; CHECK: br %r14
+  %a = load volatile fp128, fp128 *%aptr
+  %b = load volatile fp128, fp128 *%bptr
+  %c = call fp128 @copysignl(fp128 %a, fp128 %b) readnone
+  store fp128 %c, fp128 *%cptr
+  ret void
+}