Sergei Barannikov e0ed0333f0
Reland "[ARM] Stop gluing ALU nodes to branches / selects" (#118887)
Re-landing #116970 after fixing miscompilation error.

The original change made it possible for CMPZ to have multiple uses;
`ARMDAGToDAGISel::SelectCMPZ` was not prepared for this.

Pull Request: https://github.com/llvm/llvm-project/pull/118887


Original commit message:

Following #116547 and #116676, this PR changes the type of results and
operands of some nodes to accept / return a normal type instead of Glue.

Unfortunately, changing the result type of one node requires changing
the operand types of all potential consumer nodes, which in turn
requires changing the result types of all other possible producer nodes.
So this is a bulk change.
2024-12-07 10:14:36 +03:00

104 lines
2.2 KiB
LLVM

; RUN: llc < %s -mtriple=thumb-apple-darwin -verify-machineinstrs | FileCheck %s
; RUN: llc < %s -mtriple=thumb-pc-linux-gnueabi -verify-machineinstrs | FileCheck -check-prefix=CHECK-EABI %s
define i32 @f1(i32 %a.s) {
entry:
%tmp = icmp eq i32 %a.s, 4
%tmp1.s = select i1 %tmp, i32 2, i32 3
ret i32 %tmp1.s
}
; CHECK-LABEL: f1:
; CHECK: beq
; CHECK-EABI-LABEL: f1:
; CHECK-EABI: beq
define i32 @f2(i32 %a.s) {
entry:
%tmp = icmp sgt i32 %a.s, 4
%tmp1.s = select i1 %tmp, i32 2, i32 3
ret i32 %tmp1.s
}
; CHECK-LABEL: f2:
; CHECK: bgt
; CHECK-EABI-LABEL: f2:
; CHECK-EABI: bgt
define i32 @f3(i32 %a.s, i32 %b.s) {
entry:
%tmp = icmp slt i32 %a.s, %b.s
%tmp1.s = select i1 %tmp, i32 2, i32 3
ret i32 %tmp1.s
}
; CHECK-LABEL: f3:
; CHECK: blt
; CHECK-EABI-LABEL: f3:
; CHECK-EABI: blt
define i32 @f4(i32 %a.s, i32 %b.s) {
entry:
%tmp = icmp sle i32 %a.s, %b.s
%tmp1.s = select i1 %tmp, i32 2, i32 3
ret i32 %tmp1.s
}
; CHECK-LABEL: f4:
; CHECK: ble
; CHECK-EABI-LABEL: f4:
; CHECK-EABI: ble
define i32 @f5(i32 %a.u, i32 %b.u) {
entry:
%tmp = icmp ule i32 %a.u, %b.u
%tmp1.s = select i1 %tmp, i32 2, i32 3
ret i32 %tmp1.s
}
; CHECK-LABEL: f5:
; CHECK: bls
; CHECK-EABI-LABEL: f5:
; CHECK-EABI: bls
define i32 @f6(i32 %a.u, i32 %b.u) {
entry:
%tmp = icmp ugt i32 %a.u, %b.u
%tmp1.s = select i1 %tmp, i32 2, i32 3
ret i32 %tmp1.s
}
; CHECK-LABEL: f6:
; CHECK: bhi
; CHECK-EABI-LABEL: f6:
; CHECK-EABI: bhi
define double @f7(double %a, double %b) {
%tmp = fcmp olt double %a, 1.234e+00
%tmp1 = select i1 %tmp, double -1.000e+00, double %b
ret double %tmp1
}
; CHECK-LABEL: f7:
; CHECK: {{bmi|bpl}}
; CHECK: {{bmi|bpl}}
; CHECK: __ltdf2
; CHECK-EABI-LABEL: f7:
; CHECK-EABI: __aeabi_dcmplt
; CHECK-EABI: {{bne|beq}}
; CHECK-EABI: {{bne|beq}}
define {i32, i32} @f8(i32 %a, i32 %b, i32 %c, i32 %d) {
entry:
%cmp = icmp slt i32 %a, %b
%r1 = select i1 %cmp, i32 %c, i32 %a
%r2 = select i1 %cmp, i32 %d, i32 %b
%z = insertvalue { i32, i32 } undef, i32 %r1, 0
%z2 = insertvalue { i32, i32 } %z, i32 %r2, 1
ret { i32, i32 } %z2
}
; CHECK-LABEL: f8:
; CHECK: cmp r0, r1
; CHECK: blt
; CHECK: mov
; CHECK: mov
; CHECK: blt
; CHECK: movs
; CHECK: movs
; CHECK: movs
; CHECK: bx lr