llvm-6502/test/CodeGen/SystemZ/int-cmp-11.ll
Richard Sandiford 3237f88882 [SystemZ] Prefer comparisons with zero
Convert >= 1 to > 0, etc.  Using comparison with zero isn't a win on its own,
but it exposes more opportunities for CC reuse (the next patch).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187571 91177308-0d34-0410-b5e6-96231b3b80d8
2013-08-01 10:29:45 +00:00

177 lines
4.4 KiB
LLVM

; Test 64-bit signed comparisons in which the second operand is a constant.
;
; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
; Check comparisons with 0.
define double @f1(double %a, double %b, i64 %i1) {
; CHECK-LABEL: f1:
; CHECK: cgijl %r2, 0
; CHECK: ldr %f0, %f2
; CHECK: br %r14
%cond = icmp slt i64 %i1, 0
%res = select i1 %cond, double %a, double %b
ret double %res
}
; Check comparisons with 1.
define double @f2(double %a, double %b, i64 %i1) {
; CHECK-LABEL: f2:
; CHECK: cgijle %r2, 0
; CHECK: ldr %f0, %f2
; CHECK: br %r14
%cond = icmp slt i64 %i1, 1
%res = select i1 %cond, double %a, double %b
ret double %res
}
; Check the high end of the CGIJ range.
define double @f3(double %a, double %b, i64 %i1) {
; CHECK-LABEL: f3:
; CHECK: cgijl %r2, 127
; CHECK: ldr %f0, %f2
; CHECK: br %r14
%cond = icmp slt i64 %i1, 127
%res = select i1 %cond, double %a, double %b
ret double %res
}
; Check the next value up, which must use CGHI instead.
define double @f4(double %a, double %b, i64 %i1) {
; CHECK-LABEL: f4:
; CHECK: cghi %r2, 128
; CHECK-NEXT: jl
; CHECK: ldr %f0, %f2
; CHECK: br %r14
%cond = icmp slt i64 %i1, 128
%res = select i1 %cond, double %a, double %b
ret double %res
}
; Check the high end of the CGHI range.
define double @f5(double %a, double %b, i64 %i1) {
; CHECK-LABEL: f5:
; CHECK: cghi %r2, 32767
; CHECK-NEXT: jl
; CHECK: ldr %f0, %f2
; CHECK: br %r14
%cond = icmp slt i64 %i1, 32767
%res = select i1 %cond, double %a, double %b
ret double %res
}
; Check the next value up, which must use CGFI.
define double @f6(double %a, double %b, i64 %i1) {
; CHECK-LABEL: f6:
; CHECK: cgfi %r2, 32768
; CHECK-NEXT: jl
; CHECK: ldr %f0, %f2
; CHECK: br %r14
%cond = icmp slt i64 %i1, 32768
%res = select i1 %cond, double %a, double %b
ret double %res
}
; Check the high end of the CGFI range.
define double @f7(double %a, double %b, i64 %i1) {
; CHECK-LABEL: f7:
; CHECK: cgfi %r2, 2147483647
; CHECK-NEXT: jl
; CHECK: ldr %f0, %f2
; CHECK: br %r14
%cond = icmp slt i64 %i1, 2147483647
%res = select i1 %cond, double %a, double %b
ret double %res
}
; Check the next value up, which must use register comparison.
define double @f8(double %a, double %b, i64 %i1) {
; CHECK-LABEL: f8:
; CHECK: cgrjl
; CHECK: ldr %f0, %f2
; CHECK: br %r14
%cond = icmp slt i64 %i1, 2147483648
%res = select i1 %cond, double %a, double %b
ret double %res
}
; Check the high end of the negative CGIJ range.
define double @f9(double %a, double %b, i64 %i1) {
; CHECK-LABEL: f9:
; CHECK: cgijl %r2, -1
; CHECK: ldr %f0, %f2
; CHECK: br %r14
%cond = icmp slt i64 %i1, -1
%res = select i1 %cond, double %a, double %b
ret double %res
}
; Check the low end of the CGIJ range.
define double @f10(double %a, double %b, i64 %i1) {
; CHECK-LABEL: f10:
; CHECK: cgijl %r2, -128
; CHECK: ldr %f0, %f2
; CHECK: br %r14
%cond = icmp slt i64 %i1, -128
%res = select i1 %cond, double %a, double %b
ret double %res
}
; Check the next value down, which must use CGHI instead.
define double @f11(double %a, double %b, i64 %i1) {
; CHECK-LABEL: f11:
; CHECK: cghi %r2, -129
; CHECK-NEXT: jl
; CHECK: ldr %f0, %f2
; CHECK: br %r14
%cond = icmp slt i64 %i1, -129
%res = select i1 %cond, double %a, double %b
ret double %res
}
; Check the low end of the CGHI range.
define double @f12(double %a, double %b, i64 %i1) {
; CHECK-LABEL: f12:
; CHECK: cghi %r2, -32768
; CHECK-NEXT: jl
; CHECK: ldr %f0, %f2
; CHECK: br %r14
%cond = icmp slt i64 %i1, -32768
%res = select i1 %cond, double %a, double %b
ret double %res
}
; Check the next value down, which must use CGFI instead.
define double @f13(double %a, double %b, i64 %i1) {
; CHECK-LABEL: f13:
; CHECK: cgfi %r2, -32769
; CHECK-NEXT: jl
; CHECK: ldr %f0, %f2
; CHECK: br %r14
%cond = icmp slt i64 %i1, -32769
%res = select i1 %cond, double %a, double %b
ret double %res
}
; Check the low end of the CGFI range.
define double @f14(double %a, double %b, i64 %i1) {
; CHECK-LABEL: f14:
; CHECK: cgfi %r2, -2147483648
; CHECK-NEXT: jl
; CHECK: ldr %f0, %f2
; CHECK: br %r14
%cond = icmp slt i64 %i1, -2147483648
%res = select i1 %cond, double %a, double %b
ret double %res
}
; Check the next value down, which must use register comparison.
define double @f15(double %a, double %b, i64 %i1) {
; CHECK-LABEL: f15:
; CHECK: cgrjl
; CHECK: ldr %f0, %f2
; CHECK: br %r14
%cond = icmp slt i64 %i1, -2147483649
%res = select i1 %cond, double %a, double %b
ret double %res
}