Remove Emscripten support

test/CodeGen/JS/ffis.ll

-; RUN: llc < %s | FileCheck %s
-
-; Use proper types to ffi calls, no float32
-
-target datalayout = "e-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-p:32:32:32-v128:32:128-n32-S128"
-target triple = "asmjs-unknown-emscripten"
-
-; CHECK:      (+Math_sqrt(+1));
-; CHECK-NEXT: (+Math_sqrt(+1));
-; CHECK-NEXT: (+Math_sqrt((+$d)));
-; CHECK-NEXT: (+Math_sqrt((+$f)));
-; CHECK-NEXT: (+Math_ceil(+1));
-; CHECK-NEXT: (+Math_ceil(+1));
-; CHECK-NEXT: (+Math_floor(+1));
-; CHECK-NEXT: (+Math_floor(+1));
-; CHECK-NEXT: (+_min(+1,+1));
-; CHECK-NEXT: (+_fmin(+1,+1));
-; CHECK-NEXT: (+_max(+1,+1));
-; CHECK-NEXT: (+_fmax(+1,+1));
-; CHECK-NEXT: (+Math_abs(+1));
-; CHECK-NEXT: (+_absf(+1));
-; CHECK-NEXT: (+Math_sin(+1));
-; CHECK-NEXT: (+Math_sin(+1));
-define void @foo(i32 %x) {
-entry:
-  %f = fadd float 1.0, 2.0
-  %d = fadd double 1.0, 2.0
-
-  %sqrtd = call double @sqrt(double 1.0)
-  %sqrtf = call float @sqrtf(float 1.0)
-  %sqrtdv = call double @sqrt(double %d) ; check vars too
-  %sqrtfv = call float @sqrtf(float %f)
-
-  %ceild = call double @ceil(double 1.0)
-  %ceilf = call float @ceilf(float 1.0)
-
-  %floord = call double @floor(double 1.0)
-  %floorf = call float @floorf(float 1.0)
-
-  ; these could be optimized in theory
-
-  %mind = call double @min(double 1.0, double 1.0)
-  %minf = call float @fmin(float 1.0, float 1.0)
-
-  %maxd = call double @max(double 1.0, double 1.0)
-  %maxf = call float @fmax(float 1.0, float 1.0)
-
-  %absd = call double @abs(double 1.0)
-  %absf = call float @absf(float 1.0)
-
-  ; sin is NOT optimizable with floats
-
-  %sind = call double @sin(double 1.0)
-  %sinf = call float @sinf(float 1.0)
-
-  ret void
-}
-
-declare double @sqrt(double %x)
-declare float @sqrtf(float %x)
-
-declare double @ceil(double %x)
-declare float @ceilf(float %x)
-
-declare double @floor(double %x)
-declare float @floorf(float %x)
-
-declare double @min(double %x, double %y)
-declare float @fmin(float %x, float %y)
-
-declare double @max(double %x, double %y)
-declare float @fmax(float %x, float %y)
-
-declare double @abs(double %x)
-declare float @absf(float %x)
-
-declare double @sin(double %x)
-declare float @sinf(float %x)
-
-attributes #0 = { nounwind readnone }
-