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4b6cfd7cec
This patch adds support for the CRJ and CGRJ instructions. Support for the immediate forms will be a separate patch. The architecture has a large number of comparison instructions. I think it's generally better to concentrate on using the "best" comparison instruction first and foremost, then only use something like CRJ if CR really was the natual choice of comparison instruction. The patch therefore opportunistically converts separate CR and BRC instructions into a single CRJ while emitting instructions in ISelLowering. llvm-svn: 182764
134 lines
3.2 KiB
LLVM
134 lines
3.2 KiB
LLVM
; Test 64-bit signed comparisons in which the second operand is a constant.
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;
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; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
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; Check comparisons with 0.
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define double @f1(double %a, double %b, i64 %i1) {
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; CHECK: f1:
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; CHECK: cghi %r2, 0
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; CHECK-NEXT: jl
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; CHECK: ldr %f0, %f2
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; CHECK: br %r14
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%cond = icmp slt i64 %i1, 0
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%res = select i1 %cond, double %a, double %b
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ret double %res
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}
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; Check comparisons with 1.
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define double @f2(double %a, double %b, i64 %i1) {
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; CHECK: f2:
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; CHECK: cghi %r2, 1
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; CHECK-NEXT: jl
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; CHECK: ldr %f0, %f2
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; CHECK: br %r14
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%cond = icmp slt i64 %i1, 1
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%res = select i1 %cond, double %a, double %b
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ret double %res
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}
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; Check the high end of the CGHI range.
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define double @f3(double %a, double %b, i64 %i1) {
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; CHECK: f3:
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; CHECK: cghi %r2, 32767
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; CHECK-NEXT: jl
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; CHECK: ldr %f0, %f2
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; CHECK: br %r14
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%cond = icmp slt i64 %i1, 32767
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%res = select i1 %cond, double %a, double %b
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ret double %res
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}
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; Check the next value up, which must use CGFI.
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define double @f4(double %a, double %b, i64 %i1) {
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; CHECK: f4:
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; CHECK: cgfi %r2, 32768
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; CHECK-NEXT: jl
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; CHECK: ldr %f0, %f2
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; CHECK: br %r14
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%cond = icmp slt i64 %i1, 32768
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%res = select i1 %cond, double %a, double %b
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ret double %res
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}
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; Check the high end of the CGFI range.
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define double @f5(double %a, double %b, i64 %i1) {
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; CHECK: f5:
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; CHECK: cgfi %r2, 2147483647
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; CHECK-NEXT: jl
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; CHECK: ldr %f0, %f2
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; CHECK: br %r14
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%cond = icmp slt i64 %i1, 2147483647
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%res = select i1 %cond, double %a, double %b
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ret double %res
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}
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; Check the next value up, which must use register comparison.
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define double @f6(double %a, double %b, i64 %i1) {
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; CHECK: f6:
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; CHECK: cgrjl
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; CHECK: ldr %f0, %f2
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; CHECK: br %r14
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%cond = icmp slt i64 %i1, 2147483648
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%res = select i1 %cond, double %a, double %b
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ret double %res
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}
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; Check the high end of the negative CGHI range.
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define double @f7(double %a, double %b, i64 %i1) {
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; CHECK: f7:
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; CHECK: cghi %r2, -1
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; CHECK-NEXT: jl
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; CHECK: ldr %f0, %f2
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; CHECK: br %r14
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%cond = icmp slt i64 %i1, -1
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%res = select i1 %cond, double %a, double %b
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ret double %res
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}
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; Check the low end of the CGHI range.
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define double @f8(double %a, double %b, i64 %i1) {
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; CHECK: f8:
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; CHECK: cghi %r2, -32768
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; CHECK-NEXT: jl
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; CHECK: ldr %f0, %f2
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; CHECK: br %r14
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%cond = icmp slt i64 %i1, -32768
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%res = select i1 %cond, double %a, double %b
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ret double %res
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}
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; Check the next value down, which must use CGFI instead.
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define double @f9(double %a, double %b, i64 %i1) {
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; CHECK: f9:
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; CHECK: cgfi %r2, -32769
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; CHECK-NEXT: jl
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; CHECK: ldr %f0, %f2
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; CHECK: br %r14
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%cond = icmp slt i64 %i1, -32769
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%res = select i1 %cond, double %a, double %b
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ret double %res
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}
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; Check the low end of the CGFI range.
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define double @f10(double %a, double %b, i64 %i1) {
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; CHECK: f10:
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; CHECK: cgfi %r2, -2147483648
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; CHECK-NEXT: jl
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; CHECK: ldr %f0, %f2
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; CHECK: br %r14
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%cond = icmp slt i64 %i1, -2147483648
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%res = select i1 %cond, double %a, double %b
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ret double %res
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}
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; Check the next value down, which must use register comparison.
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define double @f11(double %a, double %b, i64 %i1) {
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; CHECK: f11:
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; CHECK: cgrjl
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; CHECK: ldr %f0, %f2
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; CHECK: br %r14
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%cond = icmp slt i64 %i1, -2147483649
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%res = select i1 %cond, double %a, double %b
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ret double %res
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}
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