Cherry-pick r236569 from upstream

test/CodeGen/ARM/fast-isel-select.ll

 ; RUN: llc < %s -O0 -verify-machineinstrs -fast-isel-abort=1 -relocation-model=dynamic-no-pic -mtriple=armv7-apple-ios | FileCheck %s --check-prefix=ARM
 ; RUN: llc < %s -O0 -verify-machineinstrs -fast-isel-abort=1 -relocation-model=dynamic-no-pic -mtriple=armv7-linux-gnueabi | FileCheck %s --check-prefix=ARM
 ; RUN: llc < %s -O0 -verify-machineinstrs -fast-isel-abort=1 -relocation-model=dynamic-no-pic -mtriple=thumbv7-apple-ios | FileCheck %s --check-prefix=THUMB
 ; RUN: llc < %s -O0 -fast-isel-abort=1 -relocation-model=dynamic-no-pic -mtriple=thumbv8-apple-ios | FileCheck %s --check-prefix=THUMB
 
 define i32 @t1(i1 %c) nounwind readnone {
 entry:
 ; ARM: t1
 ; ARM: movw r{{[1-9]}}, #10
-; ARM: cmp r0, #0
+; ARM: tst r0, #1
 ; ARM: moveq r{{[1-9]}}, #20
 ; ARM: mov r0, r{{[1-9]}}
 ; THUMB: t1
 ; THUMB: movs r{{[1-9]}}, #10
-; THUMB: cmp r0, #0
+; THUMB: tst.w r0, #1
 ; THUMB: it eq
 ; THUMB: moveq r{{[1-9]}}, #20
 ; THUMB: mov r0, r{{[1-9]}}
   %0 = select i1 %c, i32 10, i32 20
   ret i32 %0
 }
 
 define i32 @t2(i1 %c, i32 %a) nounwind readnone {
 entry:
 ; ARM: t2
-; ARM: cmp r0, #0
+; ARM: tst r0, #1
 ; ARM: moveq r{{[1-9]}}, #20
 ; ARM: mov r0, r{{[1-9]}}
 ; THUMB: t2
-; THUMB: cmp r0, #0
+; THUMB: tst.w r0, #1
 ; THUMB: it eq
 ; THUMB: moveq r{{[1-9]}}, #20
 ; THUMB: mov r0, r{{[1-9]}}
   %0 = select i1 %c, i32 %a, i32 20
   ret i32 %0
 }
 
 define i32 @t3(i1 %c, i32 %a, i32 %b) nounwind readnone {
 entry:
 ; ARM: t3
-; ARM: cmp r0, #0
+; ARM: tst r0, #1
 ; ARM: movne r2, r1
 ; ARM: add r0, r2, r1
 ; THUMB: t3
-; THUMB: cmp r0, #0
+; THUMB: tst.w r0, #1
 ; THUMB: it ne
 ; THUMB: movne r2, r1
 ; THUMB: add.w r0, r2, r1
   %0 = select i1 %c, i32 %a, i32 %b
   %1 = add i32 %0, %a
   ret i32 %1
 }
 
 define i32 @t4(i1 %c) nounwind readnone {
 entry:
 ; ARM: t4
 ; ARM: mvn r{{[1-9]}}, #9
-; ARM: cmp r0, #0
+; ARM: tst r0, #1
 ; ARM: mvneq r{{[1-9]}}, #0
 ; ARM: mov r0, r{{[1-9]}}
 ; THUMB-LABEL: t4
 ; THUMB: mvn [[REG:r[1-9]+]], #9
-; THUMB: cmp r0, #0
+; THUMB: tst.w r0, #1
 ; THUMB: it eq
 ; THUMB: mvneq [[REG]], #0
 ; THUMB: mov r0, [[REG]]
   %0 = select i1 %c, i32 -10, i32 -1
   ret i32 %0
 }
 
 define i32 @t5(i1 %c, i32 %a) nounwind readnone {
 entry:
 ; ARM: t5
-; ARM: cmp r0, #0
+; ARM: tst r0, #1
 ; ARM: mvneq r{{[1-9]}}, #1
 ; ARM: mov r0, r{{[1-9]}}
 ; THUMB: t5
-; THUMB: cmp r0, #0
+; THUMB: tst.w r0, #1
 ; THUMB: it eq
 ; THUMB: mvneq r{{[1-9]}}, #1
 ; THUMB: mov r0, r{{[1-9]}}
   %0 = select i1 %c, i32 %a, i32 -2
   ret i32 %0
 }
 
 ; Check one large negative immediates.
 define i32 @t6(i1 %c, i32 %a) nounwind readnone {
 entry:
 ; ARM: t6
-; ARM: cmp r0, #0
+; ARM: tst r0, #1
 ; ARM: mvneq r{{[1-9]}}, #978944
 ; ARM: mov r0, r{{[1-9]}}
 ; THUMB: t6
-; THUMB: cmp r0, #0
+; THUMB: tst.w r0, #1
 ; THUMB: it eq
 ; THUMB: mvneq r{{[1-9]}}, #978944
 ; THUMB: mov r0, r{{[1-9]}}
   %0 = select i1 %c, i32 %a, i32 -978945
   ret i32 %0
 }