176 lines
6.7 KiB
LLVM
176 lines
6.7 KiB
LLVM
; Test 32-bit floating-point strict subtraction.
|
|
;
|
|
; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z10 \
|
|
; RUN: | FileCheck -check-prefix=CHECK -check-prefix=CHECK-SCALAR %s
|
|
; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z14 | FileCheck %s
|
|
|
|
declare float @foo()
|
|
declare float @llvm.experimental.constrained.fsub.f32(float, float, metadata, metadata)
|
|
|
|
; Check register subtraction.
|
|
define float @f1(float %f1, float %f2) #0 {
|
|
; CHECK-LABEL: f1:
|
|
; CHECK: sebr %f0, %f2
|
|
; CHECK: br %r14
|
|
%res = call float @llvm.experimental.constrained.fsub.f32(
|
|
float %f1, float %f2,
|
|
metadata !"round.dynamic",
|
|
metadata !"fpexcept.strict") #0
|
|
ret float %res
|
|
}
|
|
|
|
; Check the low end of the SEB range.
|
|
define float @f2(float %f1, float *%ptr) #0 {
|
|
; CHECK-LABEL: f2:
|
|
; CHECK: seb %f0, 0(%r2)
|
|
; CHECK: br %r14
|
|
%f2 = load float, float *%ptr
|
|
%res = call float @llvm.experimental.constrained.fsub.f32(
|
|
float %f1, float %f2,
|
|
metadata !"round.dynamic",
|
|
metadata !"fpexcept.strict") #0
|
|
ret float %res
|
|
}
|
|
|
|
; Check the high end of the aligned SEB range.
|
|
define float @f3(float %f1, float *%base) #0 {
|
|
; CHECK-LABEL: f3:
|
|
; CHECK: seb %f0, 4092(%r2)
|
|
; CHECK: br %r14
|
|
%ptr = getelementptr float, float *%base, i64 1023
|
|
%f2 = load float, float *%ptr
|
|
%res = call float @llvm.experimental.constrained.fsub.f32(
|
|
float %f1, float %f2,
|
|
metadata !"round.dynamic",
|
|
metadata !"fpexcept.strict") #0
|
|
ret float %res
|
|
}
|
|
|
|
; Check the next word up, which needs separate address logic.
|
|
; Other sequences besides this one would be OK.
|
|
define float @f4(float %f1, float *%base) #0 {
|
|
; CHECK-LABEL: f4:
|
|
; CHECK: aghi %r2, 4096
|
|
; CHECK: seb %f0, 0(%r2)
|
|
; CHECK: br %r14
|
|
%ptr = getelementptr float, float *%base, i64 1024
|
|
%f2 = load float, float *%ptr
|
|
%res = call float @llvm.experimental.constrained.fsub.f32(
|
|
float %f1, float %f2,
|
|
metadata !"round.dynamic",
|
|
metadata !"fpexcept.strict") #0
|
|
ret float %res
|
|
}
|
|
|
|
; Check negative displacements, which also need separate address logic.
|
|
define float @f5(float %f1, float *%base) #0 {
|
|
; CHECK-LABEL: f5:
|
|
; CHECK: aghi %r2, -4
|
|
; CHECK: seb %f0, 0(%r2)
|
|
; CHECK: br %r14
|
|
%ptr = getelementptr float, float *%base, i64 -1
|
|
%f2 = load float, float *%ptr
|
|
%res = call float @llvm.experimental.constrained.fsub.f32(
|
|
float %f1, float %f2,
|
|
metadata !"round.dynamic",
|
|
metadata !"fpexcept.strict") #0
|
|
ret float %res
|
|
}
|
|
|
|
; Check that SEB allows indices.
|
|
define float @f6(float %f1, float *%base, i64 %index) #0 {
|
|
; CHECK-LABEL: f6:
|
|
; CHECK: sllg %r1, %r3, 2
|
|
; CHECK: seb %f0, 400(%r1,%r2)
|
|
; CHECK: br %r14
|
|
%ptr1 = getelementptr float, float *%base, i64 %index
|
|
%ptr2 = getelementptr float, float *%ptr1, i64 100
|
|
%f2 = load float, float *%ptr2
|
|
%res = call float @llvm.experimental.constrained.fsub.f32(
|
|
float %f1, float %f2,
|
|
metadata !"round.dynamic",
|
|
metadata !"fpexcept.strict") #0
|
|
ret float %res
|
|
}
|
|
|
|
; Check that subtractions of spilled values can use SEB rather than SEBR.
|
|
define float @f7(float *%ptr0) #0 {
|
|
; CHECK-LABEL: f7:
|
|
; CHECK: brasl %r14, foo@PLT
|
|
; CHECK-SCALAR: seb %f0, 16{{[04]}}(%r15)
|
|
; CHECK: br %r14
|
|
%ptr1 = getelementptr float, float *%ptr0, i64 2
|
|
%ptr2 = getelementptr float, float *%ptr0, i64 4
|
|
%ptr3 = getelementptr float, float *%ptr0, i64 6
|
|
%ptr4 = getelementptr float, float *%ptr0, i64 8
|
|
%ptr5 = getelementptr float, float *%ptr0, i64 10
|
|
%ptr6 = getelementptr float, float *%ptr0, i64 12
|
|
%ptr7 = getelementptr float, float *%ptr0, i64 14
|
|
%ptr8 = getelementptr float, float *%ptr0, i64 16
|
|
%ptr9 = getelementptr float, float *%ptr0, i64 18
|
|
%ptr10 = getelementptr float, float *%ptr0, i64 20
|
|
|
|
%val0 = load float, float *%ptr0
|
|
%val1 = load float, float *%ptr1
|
|
%val2 = load float, float *%ptr2
|
|
%val3 = load float, float *%ptr3
|
|
%val4 = load float, float *%ptr4
|
|
%val5 = load float, float *%ptr5
|
|
%val6 = load float, float *%ptr6
|
|
%val7 = load float, float *%ptr7
|
|
%val8 = load float, float *%ptr8
|
|
%val9 = load float, float *%ptr9
|
|
%val10 = load float, float *%ptr10
|
|
|
|
%ret = call float @foo() #0
|
|
|
|
%sub0 = call float @llvm.experimental.constrained.fsub.f32(
|
|
float %ret, float %val0,
|
|
metadata !"round.dynamic",
|
|
metadata !"fpexcept.strict") #0
|
|
%sub1 = call float @llvm.experimental.constrained.fsub.f32(
|
|
float %sub0, float %val1,
|
|
metadata !"round.dynamic",
|
|
metadata !"fpexcept.strict") #0
|
|
%sub2 = call float @llvm.experimental.constrained.fsub.f32(
|
|
float %sub1, float %val2,
|
|
metadata !"round.dynamic",
|
|
metadata !"fpexcept.strict") #0
|
|
%sub3 = call float @llvm.experimental.constrained.fsub.f32(
|
|
float %sub2, float %val3,
|
|
metadata !"round.dynamic",
|
|
metadata !"fpexcept.strict") #0
|
|
%sub4 = call float @llvm.experimental.constrained.fsub.f32(
|
|
float %sub3, float %val4,
|
|
metadata !"round.dynamic",
|
|
metadata !"fpexcept.strict") #0
|
|
%sub5 = call float @llvm.experimental.constrained.fsub.f32(
|
|
float %sub4, float %val5,
|
|
metadata !"round.dynamic",
|
|
metadata !"fpexcept.strict") #0
|
|
%sub6 = call float @llvm.experimental.constrained.fsub.f32(
|
|
float %sub5, float %val6,
|
|
metadata !"round.dynamic",
|
|
metadata !"fpexcept.strict") #0
|
|
%sub7 = call float @llvm.experimental.constrained.fsub.f32(
|
|
float %sub6, float %val7,
|
|
metadata !"round.dynamic",
|
|
metadata !"fpexcept.strict") #0
|
|
%sub8 = call float @llvm.experimental.constrained.fsub.f32(
|
|
float %sub7, float %val8,
|
|
metadata !"round.dynamic",
|
|
metadata !"fpexcept.strict") #0
|
|
%sub9 = call float @llvm.experimental.constrained.fsub.f32(
|
|
float %sub8, float %val9,
|
|
metadata !"round.dynamic",
|
|
metadata !"fpexcept.strict") #0
|
|
%sub10 = call float @llvm.experimental.constrained.fsub.f32(
|
|
float %sub9, float %val10,
|
|
metadata !"round.dynamic",
|
|
metadata !"fpexcept.strict") #0
|
|
|
|
ret float %sub10
|
|
}
|
|
|
|
attributes #0 = { strictfp }
|