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[InstCombine] add icmp+cast tests for ppc_fp128; NFC 

See post-commit comments for rG0f56bbc.
This commit is contained in:
Sanjay Patel 2020-04-07 07:32:52 -04:00
parent a010ef8bd8
commit e268ec8e0d
1 changed files with 24 additions and 0 deletions
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24
llvm/test/Transforms/InstCombine/icmp.ll
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@ -3697,3 +3697,27 @@ define i1 @signbit_bitcast_fpext_extra_use(float %x, i64* %p) {
%r = icmp slt i64 %b, 0
ret i1 %r
}
define i1 @signbit_bitcast_fpext_ppc_fp128(float %x) {
; CHECK-LABEL: @signbit_bitcast_fpext_ppc_fp128(
; CHECK-NEXT: [[TMP1:%.*]] = bitcast float [[X:%.*]] to i32
; CHECK-NEXT: [[S4:%.*]] = icmp slt i32 [[TMP1]], 0
; CHECK-NEXT: ret i1 [[S4]]
;
%s2 = fpext float %x to ppc_fp128
%s3 = bitcast ppc_fp128 %s2 to i128
%s4 = icmp slt i128 %s3, 0
ret i1 %s4
}
define i1 @signbit_bitcast_fptrunc_ppc_fp128(ppc_fp128 %x) {
; CHECK-LABEL: @signbit_bitcast_fptrunc_ppc_fp128(
; CHECK-NEXT: [[TMP1:%.*]] = bitcast ppc_fp128 [[X:%.*]] to i128
; CHECK-NEXT: [[S4:%.*]] = icmp slt i128 [[TMP1]], 0
; CHECK-NEXT: ret i1 [[S4]]
;
%s2 = fptrunc ppc_fp128 %x to float
%s3 = bitcast float %s2 to i32
%s4 = icmp slt i32 %s3, 0
ret i1 %s4
}