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https://github.com/c64scene-ar/llvm-6502.git
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cf0fa9b9dd
The z13 vector facility includes some instructions that operate only on the high f64 in a v2f64, effectively extending the FP register set from 16 to 32 registers. It's still better to use the old instructions if the operands happen to fit though, since the older instructions have a shorter encoding. Based on a patch by Richard Sandiford. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@236524 91177308-0d34-0410-b5e6-96231b3b80d8
172 lines
5.8 KiB
LLVM
172 lines
5.8 KiB
LLVM
; Test 64-bit square root.
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;
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; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z10 \
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; RUN: | FileCheck -check-prefix=CHECK -check-prefix=CHECK-SCALAR %s
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; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z13 | FileCheck %s
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declare double @llvm.sqrt.f64(double %f)
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declare double @sqrt(double)
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; Check register square root.
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define double @f1(double %val) {
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; CHECK-LABEL: f1:
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; CHECK: sqdbr %f0, %f0
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; CHECK: br %r14
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%res = call double @llvm.sqrt.f64(double %val)
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ret double %res
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}
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; Check the low end of the SQDB range.
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define double @f2(double *%ptr) {
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; CHECK-LABEL: f2:
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; CHECK: sqdb %f0, 0(%r2)
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; CHECK: br %r14
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%val = load double , double *%ptr
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%res = call double @llvm.sqrt.f64(double %val)
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ret double %res
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}
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; Check the high end of the aligned SQDB range.
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define double @f3(double *%base) {
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; CHECK-LABEL: f3:
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; CHECK: sqdb %f0, 4088(%r2)
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; CHECK: br %r14
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%ptr = getelementptr double, double *%base, i64 511
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%val = load double , double *%ptr
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%res = call double @llvm.sqrt.f64(double %val)
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ret double %res
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}
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; Check the next doubleword up, which needs separate address logic.
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; Other sequences besides this one would be OK.
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define double @f4(double *%base) {
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; CHECK-LABEL: f4:
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; CHECK: aghi %r2, 4096
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; CHECK: sqdb %f0, 0(%r2)
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; CHECK: br %r14
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%ptr = getelementptr double, double *%base, i64 512
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%val = load double , double *%ptr
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%res = call double @llvm.sqrt.f64(double %val)
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ret double %res
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}
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; Check negative displacements, which also need separate address logic.
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define double @f5(double *%base) {
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; CHECK-LABEL: f5:
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; CHECK: aghi %r2, -8
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; CHECK: sqdb %f0, 0(%r2)
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; CHECK: br %r14
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%ptr = getelementptr double, double *%base, i64 -1
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%val = load double , double *%ptr
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%res = call double @llvm.sqrt.f64(double %val)
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ret double %res
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}
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; Check that SQDB allows indices.
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define double @f6(double *%base, i64 %index) {
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; CHECK-LABEL: f6:
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; CHECK: sllg %r1, %r3, 3
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; CHECK: sqdb %f0, 800(%r1,%r2)
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; CHECK: br %r14
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%ptr1 = getelementptr double, double *%base, i64 %index
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%ptr2 = getelementptr double, double *%ptr1, i64 100
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%val = load double , double *%ptr2
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%res = call double @llvm.sqrt.f64(double %val)
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ret double %res
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}
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; Test a case where we spill the source of at least one SQDBR. We want
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; to use SQDB if possible.
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define void @f7(double *%ptr) {
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; CHECK-LABEL: f7:
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; CHECK-SCALAR: sqdb {{%f[0-9]+}}, 160(%r15)
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; CHECK: br %r14
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%val0 = load volatile double , double *%ptr
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%val1 = load volatile double , double *%ptr
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%val2 = load volatile double , double *%ptr
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%val3 = load volatile double , double *%ptr
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%val4 = load volatile double , double *%ptr
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%val5 = load volatile double , double *%ptr
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%val6 = load volatile double , double *%ptr
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%val7 = load volatile double , double *%ptr
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%val8 = load volatile double , double *%ptr
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%val9 = load volatile double , double *%ptr
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%val10 = load volatile double , double *%ptr
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%val11 = load volatile double , double *%ptr
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%val12 = load volatile double , double *%ptr
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%val13 = load volatile double , double *%ptr
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%val14 = load volatile double , double *%ptr
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%val15 = load volatile double , double *%ptr
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%val16 = load volatile double , double *%ptr
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%sqrt0 = call double @llvm.sqrt.f64(double %val0)
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%sqrt1 = call double @llvm.sqrt.f64(double %val1)
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%sqrt2 = call double @llvm.sqrt.f64(double %val2)
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%sqrt3 = call double @llvm.sqrt.f64(double %val3)
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%sqrt4 = call double @llvm.sqrt.f64(double %val4)
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%sqrt5 = call double @llvm.sqrt.f64(double %val5)
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%sqrt6 = call double @llvm.sqrt.f64(double %val6)
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%sqrt7 = call double @llvm.sqrt.f64(double %val7)
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%sqrt8 = call double @llvm.sqrt.f64(double %val8)
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%sqrt9 = call double @llvm.sqrt.f64(double %val9)
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%sqrt10 = call double @llvm.sqrt.f64(double %val10)
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%sqrt11 = call double @llvm.sqrt.f64(double %val11)
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%sqrt12 = call double @llvm.sqrt.f64(double %val12)
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%sqrt13 = call double @llvm.sqrt.f64(double %val13)
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%sqrt14 = call double @llvm.sqrt.f64(double %val14)
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%sqrt15 = call double @llvm.sqrt.f64(double %val15)
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%sqrt16 = call double @llvm.sqrt.f64(double %val16)
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store volatile double %val0, double *%ptr
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store volatile double %val1, double *%ptr
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store volatile double %val2, double *%ptr
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store volatile double %val3, double *%ptr
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store volatile double %val4, double *%ptr
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store volatile double %val5, double *%ptr
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store volatile double %val6, double *%ptr
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store volatile double %val7, double *%ptr
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store volatile double %val8, double *%ptr
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store volatile double %val9, double *%ptr
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store volatile double %val10, double *%ptr
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store volatile double %val11, double *%ptr
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store volatile double %val12, double *%ptr
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store volatile double %val13, double *%ptr
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store volatile double %val14, double *%ptr
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store volatile double %val15, double *%ptr
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store volatile double %val16, double *%ptr
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store volatile double %sqrt0, double *%ptr
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store volatile double %sqrt1, double *%ptr
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store volatile double %sqrt2, double *%ptr
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store volatile double %sqrt3, double *%ptr
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store volatile double %sqrt4, double *%ptr
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store volatile double %sqrt5, double *%ptr
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store volatile double %sqrt6, double *%ptr
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store volatile double %sqrt7, double *%ptr
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store volatile double %sqrt8, double *%ptr
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store volatile double %sqrt9, double *%ptr
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store volatile double %sqrt10, double *%ptr
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store volatile double %sqrt11, double *%ptr
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store volatile double %sqrt12, double *%ptr
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store volatile double %sqrt13, double *%ptr
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store volatile double %sqrt14, double *%ptr
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store volatile double %sqrt15, double *%ptr
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store volatile double %sqrt16, double *%ptr
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ret void
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}
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; Check that a call to the normal sqrt function is lowered.
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define double @f8(double %dummy, double %val) {
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; CHECK-LABEL: f8:
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; CHECK: sqdbr %f0, %f2
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; CHECK: cdbr %f0, %f0
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; CHECK: jo [[LABEL:\.L.*]]
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; CHECK: br %r14
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; CHECK: [[LABEL]]:
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; CHECK: ldr %f0, %f2
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; CHECK: jg sqrt@PLT
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%res = tail call double @sqrt(double %val)
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ret double %res
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}
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